/* =========================================================
   MAIN.CSS
   الأساسيات المشتركة في جميع الصفحات:
   - المتغيرات والوضع الداكن
   - الهيدر والفوتر
   - الأزرار والبادجات
   - الأقسام العامة (Hero, About, Skills, Education, Contact, QR, CTA)
   - الأنيميشن والعناصر العائمة
   ========================================================= */


/* =========================================================
   01. ROOT VARIABLES
========================================================= */

:root {
    --font-family: "Cairo", "Tajawal", "Segoe UI", Tahoma, Arial, sans-serif;
    --line-height: 1.6;
    --container-width: 1200px;

    --transition: 0.28s ease;
    --transition-fast: 0.12s ease;
    --transition-slow: 0.45s ease;
    --transition-slower: 0.7s ease;

    --radius-full: 999px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 22px;

    --primary: #3776ab;
    --primary-dark: #285f90;
    --accent: #ff8a00;
    --danger: #e11d48;

    --surface: #ffffff;
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f5f9;

    --text-primary: #0b1720;
    --text-secondary: #55708a;
    --text-muted: #6b7280;

    --border: rgba(11, 17, 32, 0.06);

    --shadow-sm: 0 6px 18px rgba(11, 17, 32, 0.08);
    --shadow-md: 0 10px 28px rgba(11, 17, 32, 0.10);
    --shadow-lg: 0 20px 48px rgba(11, 17, 32, 0.12);
}


/* =========================================================
   02. DARK THEME
========================================================= */

html[data-theme="dark"] {
    --bg-primary: #071226;
    --surface: #0b1724;
    --bg-secondary: #071826;
    --bg-tertiary: #0f2636;

    --text-primary: #e6f0f8;
    --text-secondary: #9fb6cc;
    --text-muted: #94a3b8;

    --border: rgba(255, 255, 255, 0.06);

    --shadow-sm: 0 8px 26px rgba(2, 6, 23, 0.6);
    --shadow-md: 0 18px 40px rgba(2, 6, 23, 0.6);
    --shadow-lg: 0 28px 70px rgba(2, 6, 23, 0.65);

    --danger: #ff6b7a;
}


/* =========================================================
   03. RESET & BASE
========================================================= */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 90px;
    overflow-x:hidden;
    max-width: 100%;
}

body {
    min-height: 100vh;
    font-family: var(--font-family);
    font-size: 16px;
    line-height: var(--line-height);
    color: var(--text-primary);
    background: var(--bg-primary);
    direction: rtl;
    overflow-x: hidden;
    transition: background-color var(--transition), color var(--transition);
    max-width: 100vw;
    width: 100%;
}

body,
button,
input,
textarea,
select {
    font-family: var(--font-family);
}

button,
input,
textarea,
select {
    font-size: inherit;
}

button {
    border: 0;
    cursor: pointer;
}

img {
    display: block;
    max-width: 100%;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

::selection {
    color: #ffffff;
    background: var(--primary);
}


/* =========================================================
   04. CONTAINER
========================================================= */

.container {
    width: min(calc(100% - 40px), var(--container-width));
    margin-inline: auto;
}


/* =========================================================
   05. SECTION
========================================================= */

.section {
    position: relative;
    padding: 100px 0;
}

.section-header {
    max-width: 760px;
    margin: 0 auto 55px;
    text-align: center;
}

.section-header h2 {
    margin: 10px 0 15px;
    font-size: clamp(2rem, 4vw, 2.8rem);
    line-height: 1.35;
}

.section-header p {
    color: var(--text-secondary);
}

.section-title {
    margin: 10px 0 15px;
    font-size: clamp(2rem, 4vw, 2.8rem);
    line-height: 1.35;
}

.section-description {
    color: var(--text-secondary);
}

.section-label,
.section-eyebrow,
.section-kicker,
.section-badge {
    display: inline-flex;
    align-items: center;
    padding: 5px 14px;
    border: 1px solid rgba(55, 118, 171, 0.25);
    border-radius: var(--radius-full);
    color: var(--primary);
    background: rgba(55, 118, 171, 0.08);
    font-size: 0.85rem;
    font-weight: 700;
}

.section-action {
    display: flex;
    justify-content: center;
    margin-top: 40px;
}


/* =========================================================
   06. BUTTONS
========================================================= */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 10px 24px;
    border-radius: var(--radius-md);
    font-weight: 700;
    cursor: pointer;
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        background-color var(--transition),
        color var(--transition),
        border-color var(--transition);
}

.btn:hover {
    transform: translateY(-3px);
}

.btn-primary {
    color: #ffffff;
    background: var(--primary);
    box-shadow: 0 8px 22px rgba(55, 118, 171, 0.25);
}

.btn-primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 12px 28px rgba(55, 118, 171, 0.35);
}

.btn-outline {
    color: var(--primary);
    border: 1px solid var(--primary);
    background: transparent;
}

.btn-outline:hover {
    color: #ffffff;
    background: var(--primary);
}

.btn-secondary {
    color: var(--text-primary);
    border: 1px solid var(--border);
    background: var(--surface);
}

.btn-secondary:hover {
    border-color: var(--primary);
    color: var(--primary);
}


/* =========================================================
   07. SITE HEADER
========================================================= */

.site-header {
    position: fixed;
    inset: 0 0 auto 0;
    z-index: 1000;
    width: 100%;
    border-bottom: 1px solid transparent;
    background: rgba(255, 255, 255, 0.88);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    transition:
        background-color var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

html[data-theme="dark"] .site-header {
    background: rgba(11, 17, 32, 0.88);
}

.site-header.scrolled {
    border-color: var(--border);
    box-shadow: var(--shadow-sm);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 76px;
}


/* =========================================================
   08. LOGO
========================================================= */

.site-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.logo-mark {
    display: grid;
    place-items: center;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    font-size: 1.3rem;
    font-weight: 900;
    overflow: hidden;
    box-shadow: 0 7px 18px rgba(55, 118, 171, 0.25);
}

.logo-mark img,
.logo-mark .logo-img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: inherit;
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.35;
}

.logo-text strong {
    font-size: 0.95rem;
}

.logo-text small {
    color: var(--text-muted);
    padding-top: 2px;
    font-size: 0.68rem;
    direction: ltr;
}


/* =========================================================
   09. NAVIGATION
========================================================= */

.main-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-item {
    list-style: none;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 8px 12px;
    color: var(--text-secondary);
    font-size: 0.92rem;
    font-weight: 700;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: "";
    position: absolute;
    right: 12px;
    bottom: 3px;
    left: 12px;
    height: 2px;
    border-radius: var(--radius-full);
    background: var(--primary);
    transform: scaleX(0);
    transform-origin: center;
    transition: transform var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}


/* =========================================================
   10. HEADER ACTIONS
========================================================= */

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.theme-toggle {
    display: grid;
    place-items: center;
    width: 42px;
    height: 42px;
    border: 1px solid var(--border);
    border-radius: 12px;
    color: var(--text-primary);
    background: var(--surface);
    transition:
        transform var(--transition),
        border-color var(--transition),
        background-color var(--transition);
}

.theme-toggle:hover {
    transform: translateY(-2px);
    border-color: var(--primary);
}

.theme-icon {
    font-size: 1.1rem;
}

.header-cv {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 8px 16px;
    border-radius: 12px;
    color: #ffffff;
    background: var(--primary);
    font-size: 0.85rem;
    font-weight: 700;
    transition:
        transform var(--transition),
        background-color var(--transition);
}

.header-cv:hover {
    transform: translateY(-2px);
    background: var(--primary-dark);
}


/* =========================================================
   11. MOBILE MENU
========================================================= */

.menu-toggle {
    display: none;
    width: 44px;
    height: 44px;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

.menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    margin: 5px auto;
    border-radius: 5px;
    background: var(--text-primary);
    transition:
        transform var(--transition),
        opacity var(--transition);
}

.menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* =========================================================
   12. MAIN
========================================================= */

.site-main {
    position: relative;
    min-height: 100vh;
}


/* =========================================================
   13. HERO SECTION
========================================================= */

.hero {
    position: relative;
    display: flex;
    align-items: center;
    min-height: 100vh;
    padding-top: 130px;
    padding-bottom: 80px;
    overflow: hidden;
    background:
        radial-gradient(circle at 15% 30%, rgba(55, 118, 171, 0.10), transparent 32%),
        radial-gradient(circle at 85% 70%, rgba(255, 211, 67, 0.08), transparent 28%);
}

.hero-container {
    display: grid;
    grid-template-columns: minmax(320px, 0.85fr) minmax(0, 1.15fr);
    align-items: center;
    gap: 50px;
}

.hero-content {
    max-width: 700px;
}

/* ملاحظة: كان .hero-badge يحيط بكل المحتوى في index.html بشكل خاطئ.
   الآن يتم تنسيقه كبادج مستقل (سيتم تصحيح HTML لاحقاً) */
.hero-badge {
    display: inline-flex;
    align-items: center;
    margin-bottom: 18px;
    padding: 7px 16px;
    border-radius: var(--radius-full);
    color: var(--primary);
    background: rgba(55, 118, 171, 0.08);
    font-size: 0.9rem;
    font-weight: 800;
}

/* حل مؤقت: عندما يكون .hero-badge حاوياً لكل شيء (البنية الخاطئة الحالية) */
.hero-badge:has(.hero-title) {
    display: block;
    padding: 0;
    background: transparent;
    border-radius: 0;
    margin-bottom: 0;
}

.hero-title {
    margin-bottom: 20px;
    font-size: clamp(2.5rem, 6vw, 4.7rem);
    line-height: 1.15;
    letter-spacing: -1px;
}

.hero-subtitle {
    color: var(--primary);
    text-align: center;
    margin-bottom: 10px;
    font-size: 1.4rem;
}

.hero-description {
    max-width: 550px;
    margin-bottom: 30px;
    margin-top: 20px;
    color: var(--text-secondary);
    font-size: 1.08rem;
    text-align: center;
}

.hero-description strong {
    color: var(--primary);
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 22px;
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-wrapper::before {
    content: "";
    position: absolute;
    width: 360px;
    height: 460px;
    border-radius: 30%;
    background: linear-gradient(135deg, rgba(55, 118, 171, 0.18), rgba(255, 211, 67, 0.12));
    filter: blur(2px);
}

.hero-image {
    position: relative;
    width: 360px;
    height: 460px;
}

.hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 30%;
}

.hero-scroll {
    position: absolute;
    bottom: 25px;
    right: 50%;
    transform: translateX(50%);
    color: var(--text-muted);
    font-size: 0.8rem;
}


/* =========================================================
   14. PAGE HERO (للصفحات الداخلية)
========================================================= */

.page-hero {
    padding-top: 160px;
    padding-bottom: 90px;
    background: linear-gradient(180deg, rgba(55, 118, 171, 0.08), transparent);
    text-align: center;
}

.page-hero-content {
    max-width: 780px;
    margin: 0 auto;
}

.page-hero h1 {
    margin: 15px 0;
    font-size: clamp(2.4rem, 5vw, 4rem);
    line-height: 1.2;
}

.page-hero p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}


/* =========================================================
   15. ABOUT SECTION
========================================================= */

.about-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr)  minmax(300px, 0.85fr);
    align-items: center;
    gap: 70px;
}

.about-image {
    overflow: hidden;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    aspect-ratio: 4 / 5;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.about-image:hover img {
    transform: scale(1.04);
}

.about-content h3 {
    margin: 12px 0 20px;
    font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.about-content p {
    margin-bottom: 15px;
    color: var(--text-secondary);
}

/* الميزات (متوافقة مع .about-features و .about-features القديمة) */
.about-features,
.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 28px;
}

.about-feature,
.about-highlight {
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.about-feature h4,
.about-highlight strong {
    display: block;
    margin-bottom: 4px;
    color: var(--primary);
    font-size: 1rem;
}

.about-feature p,
.about-highlight span {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.about-actions {
    margin-top: 25px;
}


/* =========================================================
   16. SKILLS SECTION
========================================================= */

.skills-section {
    background: var(--bg-secondary);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.skill-card {
    position: relative;
    padding: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition:
        transform var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);
}

.skill-card:hover {
    transform: translateY(-7px);
    border-color: rgba(55, 118, 171, 0.4);
    box-shadow: var(--shadow-md);
}

.skill-icon {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    margin-bottom: 18px;
    border-radius: 14px;
    background: rgba(55, 118, 171, 0.10);
    font-size: 1.4rem;
}

.skill-card h3 {
    margin-bottom: 8px;
    font-size: 1.15rem;
}

.skill-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.skill-tags span {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    background: var(--bg-secondary);
    font-size: 0.72rem;
    font-weight: 700;
}


/* =========================================================
   17. EDUCATION TIMELINE
========================================================= */

.education-section {
    overflow: hidden;
}

/* كلاسات الجدول الزمني - تدعم الأسماء القديمة والجديدة */
.timeline,
.education-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline::before,
.education-timeline::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    right: 50%;
    width: 2px;
    background: var(--border);
    transform: translateX(50%);
}

.timeline-item,
.education-item {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 45px;
}

.timeline-item:last-child,
.education-item:last-child {
    margin-bottom: 0;
}

.timeline-dot,
.education-dot {
    position: absolute;
    top: 28px;
    right: 50%;
    display: grid;
    place-items: center;
    width: 16px;
    height: 16px;
    border: 4px solid var(--surface);
    border-radius: 50%;
    background: var(--primary);
    box-shadow: 0 0 0 3px rgba(55, 118, 171, 0.18);
    transform: translateX(50%);
    font-size: 0; /* لإخفاء النقاط القديمة */
    overflow: hidden;
}

.timeline-content,
.education-content {
    padding: 25px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.timeline-item:nth-child(even) .timeline-content,
.education-item:nth-child(even) .education-content {
    grid-column: 1;
}

.timeline-item:nth-child(odd) .timeline-content,
.education-item:nth-child(odd) .education-content {
    grid-column: 2;
}

.timeline-date,
.education-year {
    display: inline-block;
    margin-bottom: 8px;
    color: var(--primary);
    font-weight: 800;
}

.timeline-content h3,
.education-content h3 {
    margin-bottom: 6px;
    font-size: 1.15rem;
}

.timeline-content h4 {
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

.timeline-content p,
.education-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 4px;
}


/* =========================================================
   18. CTA SECTION
========================================================= */

.cta-section {
    padding: 80px 0;
}

.cta-content,
.cta-box {
    position: relative;
    overflow: hidden;
    padding: 60px 35px;
    border-radius: var(--radius-xl);
    color: #ffffff;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.cta-content::before,
.cta-box::before {
    content: "";
    position: absolute;
    width: 250px;
    height: 250px;
    top: -120px;
    left: -80px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.07);
}

.cta-content::after,
.cta-box::after {
    content: "";
    position: absolute;
    width: 200px;
    height: 200px;
    bottom: -100px;
    right: -60px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
}

.cta-content > *,
.cta-box > * {
    position: relative;
    z-index: 1;
}

.cta-content .section-badge,
.cta-content .section-eyebrow,
.cta-box .section-badge,
.cta-box .section-eyebrow {
    color: #ffffff;
    border-color: rgba(255, 255, 255, 0.25);
    background: rgba(255, 255, 255, 0.10);
}

.cta-content h2,
.cta-box h2 {
    margin: 15px 0;
    font-size: clamp(1.8rem, 4vw, 2.7rem);
}

.cta-content p,
.cta-box p {
    max-width: 650px;
    margin: 0 auto 25px;
    color: rgba(255, 255, 255, 0.82);
}

.cta-content .btn-primary,
.cta-box .btn-primary {
    color: var(--primary);
    background: #ffffff;
    box-shadow: none;
}

.cta-content .btn-primary:hover,
.cta-box .btn-primary:hover {
    background: #f4f6f8;
}


/* =========================================================
   19. CONTACT SECTION
========================================================= */

.contact-section {
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
    gap: 40px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-info h3 {
    margin-bottom: 5px;
    font-size: 1.2rem;
}

.contact-info > p {
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface);
    box-shadow: var(--shadow-sm);
}

.contact-icon {
    display: grid;
    place-items: center;
    min-width: 44px;
    height: 44px;
    padding: 0 8px;
    border-radius: 12px;
    background: rgba(55, 118, 171, 0.10);
    color: var(--primary);
    font-size: 0.8rem;
    font-weight: 700;
}

.contact-item a,
.contact-item p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.contact-item a:hover {
    color: var(--primary);
}

.social-links {
    display: flex;
    gap: 10px;
    margin-top: 5px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    background: var(--surface);
    font-size: 0.85rem;
    font-weight: 700;
    transition:
        transform var(--transition),
        color var(--transition),
        border-color var(--transition);
}

.social-link:hover {
    transform: translateY(-2px);
    color: var(--primary);
    border-color: var(--primary);
}


/* =========================================================
   20. CONTACT FORM
========================================================= */

.contact-form-wrapper {
    width: 100%;
}

.contact-form {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    padding: 30px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
    box-shadow: var(--shadow-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 7px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 800;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border);
    border-radius: 11px;
    outline: none;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background-color var(--transition-fast);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(55, 118, 171, 0.12);
}

.form-error {
    display: none;
    color: var(--danger);
    font-size: 0.75rem;
}

.form-group.has-error input,
.form-group.has-error textarea {
    border-color: var(--danger);
}

.form-group.has-error .form-error {
    display: block;
}

.form-submit {
    grid-column: 1 / -1;
    display: flex;
    justify-content: flex-start;
}

.form-message {
    grid-column: 1 / -1;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.hidden-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}


/* =========================================================
   21. QR SECTION
========================================================= */

.qr-section {
    background: var(--bg-primary);
}

.qr-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
}

.qr-card {
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    text-align: center;
    background: var(--surface);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition), box-shadow var(--transition);
    cursor: pointer;
}

.qr-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.qr-image {
    overflow: hidden;
    border-radius: 10px;
    margin-bottom: 12px;
}



.qr-card img {
    width: 100%;
    aspect-ratio: 1 / 1;
    object-fit: contain;
    padding: 12px;
    background: #ffffff;
    border-radius: 12px;
}


.qr-card h3 {
    font-size: 0.9rem;
}


/* =========================================================
   22. FOOTER
========================================================= */

.site-footer {
    padding: 20px 0 15px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

.footer-minimal {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 12px 0;
    text-align: center;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.footer-logo .logo-mark {
    width: 42px;
    height: 42px;
}

.footer-socials {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.footer-social-link {
    font-size: 0.85rem;
    color: var(--text-secondary);
    transition: color var(--transition);
}

.footer-social-link:hover {
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 12px;
    color: var(--text-muted);
    font-size: 0.84rem;
    text-align: center;
}
.footer-bottom a {
    color: var(--text-muted);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

.footer-bottom a:hover {
    color: var(--primary);
}

/* =========================================================
   23. WHATSAPP FLOAT
========================================================= */



.whatsapp-float {
    position: fixed;
    left: 22px;
    bottom: 22px;
    z-index: 900;
    display: grid;
    place-items: center;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    color: #ffffff;
    background: #25d366;
    box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
    font-size: 1.45rem;
    transition:
        transform var(--transition),
        box-shadow var(--transition);
}

.whatsapp-float:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 15px 32px rgba(37, 211, 102, 0.4);
}


/* =========================================================
   24. BACK TO TOP
========================================================= */

.back-to-top {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 900;
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border: 1px solid var(--border);
    border-radius: 14px;
    color: var(--text-primary);
    background: var(--surface);
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(15px);
    transition:
        opacity var(--transition),
        visibility var(--transition),
        transform var(--transition),
        background-color var(--transition),
        border-color var(--transition);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    border-color: var(--primary);
    color: #ffffff;
    background: var(--primary);
}


/* =========================================================
   25. TEMPORARY MESSAGE
========================================================= */

.temporary-message {
    position: fixed;
    left: 50%;
    bottom: 30px;
    z-index: 2000;
    max-width: calc(100% - 40px);
    padding: 12px 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    transform: translate(-50%, 20px);
    opacity: 0;
    transition:
        opacity var(--transition),
        transform var(--transition);
}

.temporary-message.visible {
    transform: translate(-50%, 0);
    opacity: 1;
}


/* =========================================================
   26. COMPONENT ERROR
========================================================= */

.component-error {
    max-width: 500px;
    margin: 40px auto;
    padding: 15px 25px;
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    background: rgba(225, 29, 72, 0.06);
    color: var(--danger);
    text-align: center;
    font-size: 0.9rem;
}


/* =========================================================
   27. ANIMATIONS
========================================================= */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(25px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

@keyframes cardIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}


/* =========================================================
   28. RESPONSIVE - LARGE TABLETS (≤1100px)
========================================================= */

@media (max-width: 1100px) {

    .main-nav {
        gap: 15px;
    }

    .nav-list {
        gap: 2px;
    }

    .nav-link {
        padding-inline: 8px;
    }

    .hero-container {
        gap: 45px;
    }

    .skills-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .qr-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}


/* =========================================================
   29. RESPONSIVE - TABLETS (≤900px)
========================================================= */

@media (max-width: 900px) {

    .section {
        padding: 80px 0;
    }

    /* Header */
    .menu-toggle {
        display: block;
    }

    .main-nav {
        position: absolute;
        top: calc(100% + 1px);
        right: 20px;
        left: 20px;
        display: none;
        flex-direction: column;
        align-items: stretch;
        padding: 15px;
        border: 1px solid var(--border);
        border-radius: 18px;
        background: var(--surface);
        box-shadow: var(--shadow-lg);
    }

    .main-nav.open {
        display: flex;
    }

    .nav-list {
        flex-direction: column;
        align-items: stretch;
    }

    .nav-link {
        justify-content: center;
        width: 100%;
        padding: 11px;
    }

    .nav-link::after {
        display: none;
    }

    .header-actions {
        justify-content: center;
        padding-top: 10px;
        border-top: 1px solid var(--border);
    }

    /* Hero */
    .hero {
        min-height: auto;
        padding-top: 110px;
        overflow-x: hidden;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 30px;
        text-align: center;
        overflow-x: hidden;
    }

    .hero-content {
        margin: 0 auto;
        max-width: 100%;
    }

    .hero-image-wrapper {
        max-width: 100%;
        overflow: hidden;
    }

    .hero-image-wrapper::before {
        width: 240px;
        height: 300px;
        max-width: 100%;
    }
    .hero-image{
        width: 100%;
        max-width: 290px;
        height: auto;
        aspect-ratio: 360 / 460;
        margin: 0 auto;
    }

    .hero-description {
        margin-inline: auto;
    }

    .hero-actions {
        justify-content: center;
    }

    /* About */
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-image {
        max-width: 500px;
        margin: 0 auto;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
    }

    /* Education */
    .timeline::before,
    .education-timeline::before { right: 12px; transform: none;
    }

    .timeline-item,
    .education-item {
        display: block;
        padding-right: 42px;
    }

    .timeline-item:nth-child(even) .timeline-content,
    .timeline-item:nth-child(odd) .timeline-content,
    .education-item:nth-child(even) .education-content,
    .education-item:nth-child(odd) .education-content {
        grid-column: auto;
    }

    .timeline-dot,
    .education-dot {
        right: 12px;
        transform: translateX(50%);
    }
}


/* =========================================================
   30. RESPONSIVE - MOBILE (≤650px)
========================================================= */

@media (max-width: 650px) {

    .container {
        width: min(calc(100% - 28px), var(--container-width));
    }

    .section {
        padding: 65px 0;
    }

    /* Logo */
    .logo-text small {
        display: none;
    }

    .logo-mark {
        width: 42px;
        height: 42px;
    }

    /* Hero */
    .hero {
        padding-top: 115px;
        padding-bottom: 70px;
    }

    .hero-title {
        font-size: 2.4rem;
    }

    .hero-description {
        font-size: 0.95rem;
    }

    .hero-image {
        width: 100%;
        max-width: min(280px, 80vm);
        height: auto;
        aspect-ratio: 360 / 460;
        margin: 0 auto;
    }

    .hero-image-wrapper::before {
        display: none;
    }

    .hero-scroll {
        display: none;
    }

    /* Page Hero */
    .page-hero {
        padding-top: 125px;
        padding-bottom: 65px;
    }

    .page-hero h1 {
        font-size: 2.35rem;
    }

    /* Grids */
    .skills-grid {
        grid-template-columns: 1fr;
    }

    .about-features,
    .about-highlights {
        grid-template-columns: 1fr;
    }

    /* Contact */
    .contact-form {
        grid-template-columns: 1fr;
        padding: 20px;
    }

    .form-group.full-width,
    .form-submit {
        grid-column: auto;
    }

    /* QR */
    .qr-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    /* Floating Buttons */
    .whatsapp-float {
        left: 15px;
        bottom: 15px;
        width: 52px;
        height: 52px;
    }

    .back-to-top {
        right: 15px;
        bottom: 15px;
        width: 44px;
        height: 44px;
    }
}


/* =========================================================
   31. RESPONSIVE - VERY SMALL (≤400px)
========================================================= */

@media (max-width: 400px) {

    body {
        font-size: 15px;
    }

    .header-cv {
        padding-inline: 11px;
        font-size: 0.75rem;
    }

    .theme-toggle {
        width: 38px;
        height: 38px;
    }

    .hero-title {
        font-size: 2.05rem;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-actions .btn {
        width: 100%;
    }

    .btn {
        width: 100%;
        padding-inline: 18px;
    }

    .qr-grid {
        grid-template-columns: 1fr;
    }

    .qr-card img {
        width: 100%;
        height: auto;
        max-width: 200px;
        margin: 0 auto;
    }
}


/* =========================================================
   32. REDUCED MOTION
========================================================= */

@media (prefers-reduced-motion: reduce) {

    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}


/* =========================================================
   33. PRINT
========================================================= */

@media print {

    .site-header,
    .menu-toggle,
    .header-actions,
    .whatsapp-float,
    .back-to-top,
    .cta-section {
        display: none !important;
    }

    body {
        color: #000000;
        background: #ffffff;
    }

    .section {
        padding: 30px 0;
    }

    a {
        text-decoration: underline;
    }
}