/* =========================================================
   LIGHT THEME — Suallar.net
   Palitra: #FF6600  #F5F5F5  #8FD14F  #604CC3
   ========================================================= */

:root[data-theme="light"],
:root:not([data-theme]) {
    --bg-primary:      #F5F5F5;
    --bg-secondary:    #FFFFFF;
    --bg-tertiary:     #FAFAFA;
    --bg-elevated:     #FFFFFF;
    --bg-overlay:      rgba(255, 255, 255, 0.85);
    --bg-glass:        rgba(255, 255, 255, 0.65);

    --text-primary:    #1A1A1A;
    --text-secondary:  #4A4A4A;
    --text-muted:      #6B7280;
    --text-inverse:    #FFFFFF;

    --color-accent:    #FF6600;
    --color-accent-2:  #604CC3;
    --color-success:   #8FD14F;
    --color-warning:   #FF9F43;
    --color-danger:    #EF4444;
    --color-info:      #3B82F6;

    --border-color:    rgba(0, 0, 0, 0.08);
    --border-strong:   rgba(0, 0, 0, 0.16);
    --shadow-sm:       0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-md:       0 6px 20px -8px rgba(0, 0, 0, 0.15);
    --shadow-lg:       0 20px 45px -15px rgba(255, 102, 0, 0.25);
    --shadow-glow:     0 0 30px rgba(255, 102, 0, 0.2);

    --gradient-hero:   linear-gradient(135deg, #FF6600 0%, #604CC3 100%);
    --gradient-card:   linear-gradient(135deg, #FFFFFF 0%, #F5F5F5 100%);
    --gradient-accent: linear-gradient(120deg, #FF6600 0%, #FF8533 100%);

    --hero-video-opacity: 0.45;
    --hero-overlay:    linear-gradient(180deg, rgba(245,245,245,0.4) 0%, rgba(245,245,245,0.95) 100%);

    --divider-color:   #FF6600;
    --selection-bg:    #FF6600;
    --selection-fg:    #FFFFFF;
}

/* ============= BASE ============= */
html { scroll-behavior: smooth; }

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Inter', 'Manrope', system-ui, -apple-system, "Segoe UI", Tahoma, sans-serif;
    line-height: 1.6;
    transition: background-color .35s ease, color .35s ease;
    -webkit-font-smoothing: antialiased;
}

::selection { background: var(--selection-bg); color: var(--selection-fg); }

h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', 'Inter', system-ui, sans-serif;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    font-weight: 700;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color .2s ease;
}
a:hover { color: var(--color-accent-2); }

/* ============= COMPONENTS ============= */
.btn-primary {
    background: var(--gradient-accent);
    color: var(--text-inverse);
    padding: .75rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    box-shadow: var(--shadow-md);
    transition: transform .25s ease, box-shadow .25s ease, filter .25s ease;
    display: inline-flex; align-items: center; gap: .5rem;
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    filter: brightness(1.05);
    color: var(--text-inverse);
}

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    padding: .75rem 1.75rem;
    border-radius: 12px;
    font-weight: 600;
    transition: background .2s ease, border-color .2s ease;
}
.btn-secondary:hover {
    background: var(--bg-tertiary);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.btn-outline {
    background: transparent;
    color: var(--color-accent);
    border: 2px solid var(--color-accent);
    padding: .65rem 1.5rem;
    border-radius: 12px;
    font-weight: 600;
}
.btn-outline:hover { background: var(--color-accent); color: var(--text-inverse); }

/* ============= CARDS ============= */
.card-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
}

.card-base {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow-sm);
    transition: transform .3s ease, box-shadow .3s ease, border-color .3s ease;
}
.card-base:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-accent);
}

/* Category card */
.category-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
    position: relative;
    transition: transform .35s cubic-bezier(.2,.7,.2,1), box-shadow .35s ease;
}
.category-card::before {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255,102,0,0.06) 100%);
    opacity: 0; transition: opacity .35s ease;
    pointer-events: none;
}
.category-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 50px -20px rgba(255,102,0,0.4);
}
.category-card:hover::before { opacity: 1; }

.category-card .icon-circle {
    width: 64px; height: 64px;
    border-radius: 18px;
    display: grid; place-items: center;
    background: var(--gradient-accent);
    color: var(--text-inverse);
    font-size: 1.75rem;
    box-shadow: 0 12px 25px -10px rgba(255,102,0,0.55);
}

/* Stat card */
.stat-card {
    background: var(--bg-elevated);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    text-align: center;
    transition: transform .3s ease;
}
.stat-card:hover { transform: translateY(-4px); }
.stat-card .stat-num {
    font-size: 2.5rem; font-weight: 800;
    background: var(--gradient-accent);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* ============= NAVBAR ============= */
.site-header {
    background: var(--bg-overlay);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border-bottom: 1px solid var(--border-color);
    position: sticky; top: 0; z-index: 50;
}
.site-header .nav-link {
    color: var(--text-primary);
    font-weight: 500;
    padding: .5rem 1rem;
    border-radius: 10px;
    position: relative;
    transition: color .2s ease, background .2s ease;
}
.site-header .nav-link:hover { color: var(--color-accent); background: rgba(255,102,0,0.06); }
.site-header .nav-link.active { color: var(--color-accent); }

/* Theme toggle */
.theme-toggle {
    width: 44px; height: 44px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-elevated);
    color: var(--text-primary);
    display: grid; place-items: center;
    cursor: pointer;
    transition: transform .2s ease, background .2s ease, color .2s ease;
}
.theme-toggle:hover { transform: rotate(15deg); color: var(--color-accent); }

/* ============= HERO ============= */
.hero {
    position: relative;
    min-height: 92vh;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
    isolation: isolate;
}
.hero-video {
    position: absolute; inset: 0;
    width: 100%; height: 100%; object-fit: cover;
    z-index: -2;
    opacity: var(--hero-video-opacity);
    transition: opacity .5s ease;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: var(--hero-overlay);
    z-index: -1;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 4.25rem);
    line-height: 1.05;
    background: var(--gradient-accent);
    -webkit-background-clip: text; background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.25rem;
}
.hero .lead {
    color: var(--text-secondary);
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    max-width: 720px; margin: 0 auto 2rem;
}

/* Animated rotating word */
.rotator {
    display: inline-block;
    position: relative;
    min-width: 4ch;
    color: var(--color-accent-2);
    font-weight: 800;
}
.rotator span {
    position: absolute; left: 0; top: 0;
    opacity: 0; transform: translateY(20px);
    transition: opacity .4s ease, transform .4s ease;
    white-space: nowrap;
}
.rotator span.active {
    position: relative;
    opacity: 1; transform: translateY(0);
}

/* ============= DIVIDERS ============= */
.section-divider {
    position: relative;
    height: 70px;
    background: var(--bg-primary);
    overflow: hidden;
}
.section-divider svg {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
}

/* Wave variation */
.divider-wave path { fill: var(--bg-secondary); }

/* Slant variation */
.divider-slant {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    transform: skewY(-2deg);
    margin: -35px 0;
}

/* Gradient line */
.divider-line {
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, var(--color-accent) 25%, var(--color-accent-2) 75%, transparent 100%);
    border-radius: 2px;
    margin: 3rem auto;
    max-width: 80%;
}

/* Dot pattern */
.divider-dots {
    display: flex; align-items: center; justify-content: center;
    gap: .5rem; padding: 2.5rem 0;
}
.divider-dots span {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--color-accent);
    opacity: .35;
}
.divider-dots span:nth-child(2) { opacity: .55; }
.divider-dots span:nth-child(3) { opacity: 1; transform: scale(1.4); }
.divider-dots span:nth-child(4) { opacity: .55; }
.divider-dots span:nth-child(5) { opacity: .35; }

/* ============= FORMS ============= */
.input-base {
    width: 100%;
    background: var(--bg-elevated);
    border: 1.5px solid var(--border-color);
    color: var(--text-primary);
    padding: .8rem 1rem;
    border-radius: 12px;
    transition: border-color .2s ease, box-shadow .2s ease;
}
.input-base:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px rgba(255,102,0,0.15);
}

.label-base {
    display: block; font-weight: 600;
    color: var(--text-primary);
    margin-bottom: .35rem;
    font-size: .95rem;
}

/* ============= ALERT ============= */
.alert-success { background: rgba(143,209,79,0.12); border-left: 4px solid var(--color-success); padding: 1rem; border-radius: 8px; color: #2f6f1f; }
.alert-danger  { background: rgba(239,68,68,0.10); border-left: 4px solid var(--color-danger);  padding: 1rem; border-radius: 8px; color: #b32424; }
.alert-info    { background: rgba(96,76,195,0.10); border-left: 4px solid var(--color-accent-2);padding: 1rem; border-radius: 8px; color: #4a3aa6; }
.alert-warning { background: rgba(255,159,67,0.12); border-left: 4px solid var(--color-warning); padding: 1rem; border-radius: 8px; color: #b56b14; }

/* ============= FOOTER ============= */
.site-footer {
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    margin-top: 4rem;
}
.site-footer h4 { color: var(--text-primary); }
.site-footer a { color: var(--text-secondary); }
.site-footer a:hover { color: var(--color-accent); }

/* ============= SCROLLBAR ============= */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--gradient-accent); border-radius: 6px; }
::-webkit-scrollbar-thumb:hover { background: var(--color-accent-2); }

/* ============= SCROLL TO TOP ============= */
.scroll-top {
    position: fixed; right: 1.5rem; bottom: 1.5rem;
    width: 50px; height: 50px;
    background: var(--gradient-accent);
    color: var(--text-inverse);
    border-radius: 50%;
    display: grid; place-items: center;
    box-shadow: var(--shadow-md);
    opacity: 0; pointer-events: none;
    transform: translateY(10px);
    transition: opacity .3s ease, transform .3s ease;
    z-index: 40;
}
.scroll-top.visible { opacity: 1; pointer-events: auto; transform: translateY(0); }