/* ============================================================
   Design Tokens
   ============================================================ */
:root {
    --primary:        #7D019F;
    --primary-dark:   #5a0173;
    --primary-light:  #9f01c9;
    --accent:         #FED403;
    --success:        #10b981;
    --dark:           #0f172a;
    --dark-2:         #1e293b;
    --light:          #ffffff;
    --card-bg:        #ffffff;
    --text:           #1e293b;
    --text-muted:     #64748b;

    --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.05);
    --shadow:     0 4px 16px rgba(0,0,0,.08);
    --shadow-lg:  0 20px 60px rgba(0,0,0,.14);
    --shadow-glow: 0 0 30px rgba(125,1,159,.3);

    --radius:      12px;
    --radius-lg:   20px;
    --radius-full: 9999px;

    --ease:  cubic-bezier(.4,0,.2,1);
    --t-fast:  .2s var(--ease);
    --t-base:  .3s var(--ease);
    --t-slow:  .6s var(--ease);
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--light);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}

/* ============================================================
   Navbar
   ============================================================ */
.navbar {
    background: rgba(255,255,255,.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(125,1,159,.1);
    padding: .4rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: background var(--t-base), box-shadow var(--t-base);
}

.navbar.scrolled {
    background: rgba(255,255,255,1);
    box-shadow: 0 4px 30px rgba(125,1,159,.15);
}

.navbar-brand {
    transition: transform var(--t-base), filter var(--t-base);
}
.navbar-brand:hover {
    transform: scale(1.05);
    filter: drop-shadow(0 0 8px rgba(125,1,159,.6));
}

.navbar-brand img { height: 62px; }

.nav-link {
    color: #7D019F !important;
    font-weight: 500;
    font-size: 0.84rem;
    padding: .3rem .55rem !important;
    border-radius: var(--radius);
    transition: color var(--t-fast), background var(--t-fast);
    position: relative;
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 2px; left: 50%;
    width: 0; height: 2px;
    background: var(--accent);
    border-radius: var(--radius-full);
    transition: width var(--t-base);
    transform: translateX(-50%);
}
.nav-link:hover {
    color: var(--primary) !important;
    background: rgba(125,1,159,.08);
}
.nav-link:hover::after { width: 55%; }

/* User Dropdown & Login Button Spacing */
.navbar .btn-link.nav-link.me-3,
.navbar .dropdown {
    margin-right: 0.75rem !important;  /* Add spacing in LTR mode */
}

/* Language Switcher */
.language-switcher {
    display: flex;
    gap: .2rem;
    background: rgba(125,1,159,.08);
    border-radius: var(--radius-full);
    padding: .2rem;
}
.language-switcher button {
    color: rgba(125,1,159,.7);
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .06em;
    padding: .28rem .55rem;
    border-radius: var(--radius-full);
    background: none;
    border: none;
    cursor: pointer;
    transition: all var(--t-fast);
    text-decoration: none;
}
.language-switcher button:hover {
    color: var(--primary);
    background: rgba(125,1,159,.14);
}
.language-switcher button.active {
    color: #fff;
    background: var(--primary);
    box-shadow: 0 2px 8px rgba(125,1,159,.4);
}

/* Language Dropdown Button */
.lang-btn {
    color: #7D019F !important;
    padding: .38rem .8rem !important;
    border-radius: var(--radius-full) !important;
    background: rgba(125,1,159,.08) !important;
    border: 1px solid rgba(125,1,159,.2) !important;
    font-size: .8rem;
    transition: all var(--t-fast) !important;
    line-height: 1.4;
}
.lang-btn:hover,
.lang-btn:focus,
.lang-btn[aria-expanded="true"] {
    background: rgba(125,1,159,.15) !important;
    color: #7D019F !important;
    border-color: rgba(125,1,159,.4) !important;
    box-shadow: none !important;
}
.lang-btn::after { margin-left: .2rem; }

/* Auth Buttons */
.btn-outline-light {
    border-color: rgba(125,1,159,.3) !important;
    color: rgba(125,1,159,.9) !important;
    transition: all var(--t-base) !important;
}
.btn-outline-light:hover {
    background: rgba(125,1,159,.14) !important;
    border-color: rgba(125,1,159,.55) !important;
    color: var(--primary) !important;
    transform: translateY(-1px);
}
.btn-outline-danger.btn-sm { transition: all var(--t-base) !important; }
.btn-outline-danger.btn-sm:hover { transform: translateY(-1px); }

/* ============================================================
   Hero Section
   ============================================================ */
.hero-section {
    position: relative;
    background: url('../images/hero-bg.jpg');
    background-size: 100% 100%;
    background-position: center;
    background-attachment: fixed;
    padding: 6rem 0;
    color: white;
    text-align: center;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-section .container { position: relative; z-index: 1; }

/* ============================================================
   Section Layout
   ============================================================ */
.section { padding: 2rem 0; }

h2.text-center.mb-5 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--dark);
    position: relative;
    padding-bottom: 1rem;
    margin-bottom: 3rem !important;
}
h2.text-center.mb-5::after {
    content: '';
    position: absolute;
    bottom: 0; left: 50%;
    transform: translateX(-50%);
    width: 55px; height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: var(--radius-full);
}

/* ============================================================
   Cards (General Bootstrap .card)
   ============================================================ */
.card {
    border: none !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow);
    transition: transform var(--t-base), box-shadow var(--t-base);
    background: var(--card-bg);
    overflow: hidden;
}
.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.card-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1rem;
}

/* ============================================================
   Buttons
   ============================================================ */
.btn {
    border-radius: var(--radius-full) !important;
    font-weight: 600;
    padding: .55rem 1.4rem;
    transition: all var(--t-base) !important;
    position: relative;
    overflow: hidden;
}
/* Ripple */
.btn::after {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 0; height: 0;
    background: rgba(255,255,255,.22);
    border-radius: 50%;
    transform: translate(-50%,-50%);
    transition: width .55s var(--ease), height .55s var(--ease), opacity .55s;
    opacity: 0;
}
.btn:active::after { width: 220px; height: 220px; opacity: 0; }

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%) !important;
    border: none !important;
    box-shadow: 0 4px 14px rgba(125,1,159,.38) !important;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(125,1,159,.52) !important;
}

.btn-outline-primary {
    border-color: var(--primary) !important;
    color: var(--primary) !important;
    background: transparent !important;
}
.btn-outline-primary:hover {
    background: var(--primary) !important;
    color: #fff !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 14px rgba(125,1,159,.3) !important;
}

.btn-outline-secondary:hover {
    transform: translateY(-2px);
}

/* ============================================================
   Badges
   ============================================================ */
.badge {
    border-radius: var(--radius-full) !important;
    font-weight: 600;
    letter-spacing: .04em;
    padding: .3em .7em;
}

/* ============================================================
   Breadcrumb
   ============================================================ */
.breadcrumb-nav {
    padding: 1rem 0;
    margin-bottom: 1.5rem;
    font-size: .88rem;
    color: var(--text-muted);
}
.breadcrumb-nav a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--t-fast);
}
.breadcrumb-nav a:hover { color: var(--primary-dark); }

/* ============================================================
   Footer
   ============================================================ */
footer {
    background: linear-gradient(135deg, #0f172a 0%, #1e1b4b 100%);
    color: rgba(255,255,255,.75);
    padding: 3rem 0;
    margin-top: 0;
    position: relative;
    overflow: hidden;
}
footer::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary), var(--accent), transparent);
}
footer h5 { color: #fff; font-weight: 700; margin-bottom: .6rem; }
footer p  { color: rgba(255,255,255,.55); margin-bottom: 0; }

/* ============================================================
   Scroll-Reveal Animation Classes
   ============================================================ */
.reveal {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity var(--t-slow), transform var(--t-slow);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}
.reveal.from-left  { transform: translateX(-32px); }
.reveal.from-right { transform: translateX(32px); }
.reveal.from-left.visible,
.reveal.from-right.visible { transform: translateX(0); }

/* Stagger helper — JS sets --i on each child (capped at 5 in animations.js) */
.stagger-reveal > * {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .5s var(--ease), transform .5s var(--ease);
    transition-delay: calc(var(--i, 0) * 40ms);
}
.stagger-reveal.visible > * {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================================
   Alerts
   ============================================================ */
.alert {
    border: none;
    border-radius: var(--radius) !important;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
    .hero-section { padding: 4rem 0; }
    .section { padding: 1.5rem 0; }
    h2.text-center.mb-5 { font-size: 1.65rem; }
}

/* ============================================================
   Per-language Font Families  (override Bootstrap vars + force inherit)
   ============================================================ */
html[lang="fa"] {
    --bs-body-font-family:    'IRANYekan', 'Vazirmatn', 'IRANSans', sans-serif;
    --bs-heading-font-family: 'IRANYekan', 'Vazirmatn', 'IRANSans', sans-serif;
    --bs-btn-font-family:     'IRANYekan', 'Vazirmatn', 'IRANSans', sans-serif;
    font-family: 'IRANYekan', 'Vazirmatn', 'IRANSans', sans-serif;
}
html[lang="ar"] {
    --bs-body-font-family:    'Tajawal', 'Cairo', 'Noto Sans Arabic', 'Segoe UI', Tahoma, Arial, sans-serif;
    --bs-heading-font-family: 'Tajawal', 'Cairo', 'Noto Sans Arabic', 'Segoe UI', Tahoma, Arial, sans-serif;
    --bs-btn-font-family:     'Tajawal', 'Cairo', 'Noto Sans Arabic', 'Segoe UI', Tahoma, Arial, sans-serif;
    font-family: 'Tajawal', 'Cairo', 'Noto Sans Arabic', 'Segoe UI', Tahoma, Arial, sans-serif;
}
html[lang="en"] {
    --bs-body-font-family:    system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --bs-heading-font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --bs-btn-font-family:     system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}
/* Force all descendants to inherit the language font */
html[lang] *,
html[lang] *::before,
html[lang] *::after {
    font-family: inherit;
}

/* ============================================================
   Language Dropdown
   ============================================================ */
.lang-btn {
    color: rgba(255,255,255,.85) !important;
    padding: .38rem .8rem !important;
    border-radius: var(--radius-full) !important;
    background: rgba(255,255,255,.09) !important;
    border: 1px solid rgba(255,255,255,.14) !important;
    font-size: .8rem;
    transition: all var(--t-fast) !important;
    line-height: 1.4;
}
.lang-btn:hover,
.lang-btn:focus,
.lang-btn[aria-expanded="true"] {
    background: rgba(255,255,255,.18) !important;
    color: #fff !important;
    border-color: rgba(255,255,255,.3) !important;
    box-shadow: none !important;
}
.lang-btn::after { margin-left: .2rem; }

.lang-code {
    font-size: .72rem;
    font-weight: 700;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: #7D019F;
}

/* Navbar Toggler Icon - Purple Color */
.navbar-toggler {
    border-color: rgba(125,1,159,.3);
}
.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(125, 1, 159, 0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}
.navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(125,1,159,.25);
}

.lang-menu {
    background: rgba(15,23,42,.97) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,.1) !important;
    border-radius: var(--radius) !important;
    padding: .35rem !important;
    min-width: 160px;
    box-shadow: 0 16px 50px rgba(0,0,0,.5) !important;
}

.lang-item {
    color: rgba(255,255,255,.72) !important;
    border-radius: 8px !important;
    padding: .5rem .85rem !important;
    font-size: .875rem;
    display: flex !important;
    align-items: center;
    gap: .55rem;
    background: none !important;
    border: none !important;
    width: 100%;
    text-align: start;
    cursor: pointer;
    transition: all var(--t-fast) !important;
}
.lang-item:hover {
    color: #fff !important;
    background: rgba(255,255,255,.1) !important;
}
.lang-item.active {
    color: #fff !important;
    background: rgba(99,102,241,.45) !important;
    font-weight: 600;
}
.lang-flag { font-size: 1.05rem; line-height: 1; }

/* ============================================================
   Card Carousel (arrow-navigated horizontal list)
   ============================================================ */
.card-carousel {
    position: relative;
    display: flex;
    align-items: center;
    gap: .6rem;
}

.carousel-track-wrap {
    overflow: hidden;
    flex: 1;
    min-width: 0;
    /* Extra padding so card hover shadow/transform is not clipped */
    padding-top: .5rem;
    margin-top: -.5rem;
    padding-bottom: 1.5rem;
    margin-bottom: -1.5rem;
}

.carousel-track {
    display: flex;
    gap: 1.1rem;
    transition: transform .45s cubic-bezier(.4, 0, .2, 1);
    will-change: transform;
}

.carousel-item-card {
    flex: 0 0 220px;
    text-decoration: none;
}
.carousel-item-card .project-card { height: 100%; }

/* ── Arrow Buttons ────────────────────────────────────── */
.carousel-btn {
    flex: 0 0 auto;
    width: 42px; height: 42px;
    border-radius: 50%;
    border: 2px solid rgba(99,102,241,.22);
    background: #fff;
    color: var(--primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--t-base), color var(--t-base),
                border-color var(--t-base), box-shadow var(--t-base),
                transform var(--t-fast), opacity var(--t-base);
    box-shadow: 0 4px 14px rgba(0,0,0,.1);
    z-index: 2;
    padding: 0;
}
.carousel-btn:hover:not(:disabled) {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 6px 22px rgba(99,102,241,.4);
    transform: scale(1.1);
}
.carousel-btn:disabled {
    opacity: .28;
    cursor: not-allowed;
    transform: none !important;
    box-shadow: none;
}

/* RTL: flip chevron icons so they point in the correct visual direction.
   In RTL flex the prev btn (‹) ends up on the right, next (›) on the left,
   so we mirror the SVGs to match the direction of travel. */
[dir="rtl"] .carousel-btn svg {
    transform: scaleX(-1);
}

/* ── Centered mode (< 5 items: no arrows, items wrap-centred) ── */
.card-carousel.carousel--centered {
    gap: 0;
}
.card-carousel.carousel--centered .carousel-btn {
    display: none !important;
}
.card-carousel.carousel--centered .carousel-track-wrap {
    overflow: visible;
}
.card-carousel.carousel--centered .carousel-track {
    flex-wrap: wrap;
    justify-content: center;
    transform: none !important;
    transition: none !important;
    width: 100%;
}

/* ============================================================
   Hero Logo (bigger)
   ============================================================ */
.hero-logo { max-width: 300px !important; }