/* =========================================================================
   CV REHAD EDUMEDIA CIPTA (EDUMC.ID) - LANDING PAGE STYLES
   ========================================================================= */

/* -------------------------------------------------------------------------
   VARIABLES
   ------------------------------------------------------------------------- */
:root {
    /* Color Palette - Dark Premium */
    --clr-bg: hsl(225, 30%, 6%);
    --clr-bg-alt: hsl(225, 30%, 9%);
    --clr-surface: hsla(225, 30%, 15%, 0.6);
    --clr-surface-border: hsla(0, 0%, 100%, 0.08);

    --clr-text: hsl(210, 40%, 98%);
    --clr-text-muted: hsla(210, 40%, 98%, 0.65);
    
    --clr-accent: hsl(190, 80%, 60%);
    --clr-accent-secondary: hsl(250, 80%, 70%);
    --clr-success: hsl(140, 70%, 50%);

    /* Gradients */
    --grad-primary: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent-secondary) 100%);
    --grad-glass: linear-gradient(135deg, hsla(0,0%,100%,0.1), hsla(0,0%,100%,0.0));

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Shadows & Glows */
    --glow-accent: 0 0 20px hsla(190, 80%, 50%, 0.3);
    --glow-secondary: 0 0 20px hsla(250, 80%, 60%, 0.3);
    --shadow-soft: 0 10px 30px rgba(0,0,0,0.5);

    /* Additional Theme Variables */
    --clr-accent-alpha-10: hsla(190, 80%, 60%, 0.1);
    --clr-accent-alpha-30: hsla(190, 80%, 60%, 0.3);
    --glow-accent-hover: 0 0 30px hsla(190, 80%, 60%, 0.5);
    --clr-glass-overlay: hsla(0, 0%, 100%, 0.05);
    --clr-watermark: hsla(0, 0%, 100%, 0.03);

    /* Transitions */
    --trans-fast: 0.2s ease-out;
    --trans-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --trans-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables */
[data-theme="light"] {
    --clr-bg: hsl(0, 0%, 98%);
    --clr-bg-alt: hsl(0, 0%, 95%);
    --clr-surface: hsla(0, 0%, 100%, 0.8);
    --clr-surface-border: hsla(225, 30%, 10%, 0.1);

    --clr-text: hsl(225, 30%, 15%);
    --clr-text-muted: hsla(225, 30%, 15%, 0.7);
    
    --clr-accent: hsl(200, 90%, 45%);
    --clr-accent-secondary: hsl(250, 80%, 55%);
    --clr-success: hsl(140, 70%, 40%);

    --grad-primary: linear-gradient(135deg, var(--clr-accent) 0%, var(--clr-accent-secondary) 100%);
    --grad-glass: linear-gradient(135deg, hsla(225,30%,10%,0.05), hsla(225,30%,10%,0.0));
    
    --glow-accent: 0 0 20px hsla(200, 90%, 45%, 0.4);
    --glow-secondary: 0 0 20px hsla(250, 80%, 55%, 0.4);
    --shadow-soft: 0 10px 30px rgba(0,0,0,0.08);

    /* Additional Light Theme Variables */
    --clr-accent-alpha-10: hsla(200, 90%, 45%, 0.1);
    --clr-accent-alpha-30: hsla(200, 90%, 45%, 0.3);
    --glow-accent-hover: 0 0 30px hsla(200, 90%, 45%, 0.5);
    --clr-glass-overlay: hsla(225, 30%, 10%, 0.05);
    --clr-watermark: hsla(225, 30%, 10%, 0.03);
}

/* -------------------------------------------------------------------------
   RESET & BASE ROUTING
   ------------------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--clr-bg);
    color: var(--clr-text);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    transition: background-color var(--trans-normal), color var(--trans-normal);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.5em;
}

h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--trans-fast);
}

p {
    color: var(--clr-text-muted);
    margin-bottom: 1rem;
}

ul { list-style: none; }

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.text-center { text-align: center; }

/* -------------------------------------------------------------------------
   UTILITIES & COMPONENTS
   ------------------------------------------------------------------------- */
.text-gradient {
    background: var(--grad-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.text-accent { color: var(--clr-accent); }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--trans-normal);
    border: none;
}

.btn-primary {
    background: var(--grad-primary);
    color: #fff;
    box-shadow: var(--glow-accent);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow-accent-hover);
}

.btn-secondary {
    background: transparent;
    border: 1px solid var(--clr-surface-border);
    color: var(--clr-text);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--clr-glass-overlay);
    border-color: var(--clr-text-muted);
}

.section-header {
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
}

.section-subtitle {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    color: var(--clr-text-muted);
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.section-description {
    max-width: 600px;
    margin: 0 auto;
    font-size: 1.1rem;
}

/* -------------------------------------------------------------------------
   INTERACTIVE REVEAL ANIMATIONS
   ------------------------------------------------------------------------- */
.reveal-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--trans-slow), transform var(--trans-slow);
}

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

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* -------------------------------------------------------------------------
   3D TILT EFFECT & GLASSMORPHISM
   ------------------------------------------------------------------------- */
/* Wrap tilt-card so 3D perspective is possible */
.tilt-card {
    will-change: transform;
    transform-style: preserve-3d;
    perspective: 1000px;
}

/* -------------------------------------------------------------------------
   AMBIENT BACKGROUND 3D ORBS
   ------------------------------------------------------------------------- */
.ambient-background {
    position: fixed;
    top: 0; left: 0; width: 100%; height: 100%;
    z-index: 0;
    overflow: hidden;
    pointer-events: none;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: drift 20s infinite alternate ease-in-out;
}

.orb-1 {
    width: 60vw; height: 60vw;
    background: rgba(18, 113, 255, 0.4);
    top: -20%; left: -10%;
}

.orb-2 {
    width: 50vw; height: 50vw;
    background: rgba(144, 19, 254, 0.3);
    bottom: -10%; right: -10%;
    animation-delay: -5s;
}

.orb-3 {
    width: 40vw; height: 40vw;
    background: rgba(0, 230, 255, 0.2);
    top: 40%; left: 50%;
    transform: translateX(-50%);
    animation-delay: -10s;
}

@keyframes drift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 10%) scale(1.1); }
}

/* -------------------------------------------------------------------------
   NAVBAR
   ------------------------------------------------------------------------- */
.glass-navbar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    z-index: 100;
    padding: 1.2rem 0;
    background: hsla(225, 30%, 6%, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--clr-surface-border);
    transition: padding var(--trans-normal), background var(--trans-fast);
}

[data-theme="light"] .glass-navbar {
    background: hsla(0, 0%, 100%, 0.8);
}

.glass-navbar.scrolled {
    padding: 0.8rem 0;
    box-shadow: var(--shadow-soft);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0; left: 0;
    width: 0%;
    height: 2px;
    background: var(--grad-primary);
    transition: width var(--trans-fast);
}

.nav-links a:hover::after { width: 100%; }

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--clr-text);
    font-size: 1.5rem;
    cursor: pointer;
}

/* -------------------------------------------------------------------------
   HERO SECTION
   ------------------------------------------------------------------------- */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-container {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
}

.badge-accent {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: var(--clr-accent-alpha-10);
    border: 1px solid var(--clr-accent);
    color: var(--clr-accent);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: 1rem;
}

/* 3D Visual Cube */
.hero-visual {
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cube-container {
    width: 250px;
    height: 250px;
}

.cube {
    width: 100%;
    height: 100%;
    position: relative;
    transform-style: preserve-3d;
    transform: rotateX(-20deg) rotateY(-45deg);
    animation: rotateCube 20s infinite linear;
}

.face {
    position: absolute;
    width: 250px;
    height: 250px;
    background: var(--clr-surface);
    border: 1px solid var(--clr-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    color: var(--clr-text);
    backdrop-filter: blur(5px);
    box-shadow: inset 0 0 40px var(--clr-accent-alpha-10);
    transition: background-color var(--trans-normal), border-color var(--trans-normal), box-shadow var(--trans-normal);
}

.front  { transform: translateZ(125px); }
.back   { transform: rotateY(180deg) translateZ(125px); }
.right  { transform: rotateY(90deg) translateZ(125px); }
.left   { transform: rotateY(-90deg) translateZ(125px); }
.top    { transform: rotateX(90deg) translateZ(125px); }
.bottom { transform: rotateX(-90deg) translateZ(125px); }

@keyframes rotateCube {
    from { transform: rotateX(-20deg) rotateY(0deg); }
    to { transform: rotateX(-20deg) rotateY(360deg); }
}

/* -------------------------------------------------------------------------
   ABOUT SECTION
   ------------------------------------------------------------------------- */
.about-section {
    padding: 8rem 0;
    position: relative;
}

.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-visual {
    position: relative;
    height: 400px;
}

.glass-panel {
    background: var(--clr-surface);
    border: 1px solid var(--clr-surface-border);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    position: absolute;
    transition: background-color var(--trans-normal), border-color var(--trans-normal);
}

.main-panel {
    width: 80%;
    height: 100%;
    left: 0; top: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transform: translateZ(20px);
}

.watermark-icon {
    position: absolute;
    top: -20px; right: -20px;
    font-size: 15rem;
    color: var(--clr-watermark);
}

.floating-panel {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    font-family: var(--font-heading);
    font-weight: 600;
}

.panel-1 {
    right: 0; top: 10%;
    transform: translateZ(50px);
    background: var(--clr-bg-alt);
    border-color: var(--clr-accent);
}

.panel-2 {
    right: -10%; bottom: 20%;
    transform: translateZ(80px);
    background: var(--grad-primary);
    border: none;
}

.floating-panel i {
    font-size: 1.5rem;
    color: var(--clr-accent);
}

.panel-2 i { color: #fff; }

/* -------------------------------------------------------------------------
   SERVICES SECTION
   ------------------------------------------------------------------------- */
.services-section {
    padding: 8rem 0;
    background: var(--clr-bg-alt);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background: var(--clr-surface);
    border: 1px solid var(--clr-surface-border);
    border-radius: 20px;
    padding: 3rem 2rem;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: border-color var(--trans-normal), background-color var(--trans-normal), box-shadow var(--trans-normal);
}

.card-glow {
    position: absolute;
    top: 50%; left: 50%;
    width: 150px; height: 150px;
    background: var(--clr-accent);
    filter: blur(80px);
    opacity: 0;
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: opacity var(--trans-normal);
    pointer-events: none;
}

.service-card:hover .card-glow { opacity: 0.15; }
.service-card:hover { border-color: var(--clr-accent); }

.service-icon {
    font-size: 3rem;
    color: var(--clr-accent);
    margin-bottom: 1.5rem;
    transform: translateZ(30px);
}

.service-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    transform: translateZ(20px);
}

.service-division {
    display: inline-block;
    padding: 0.2rem 0.8rem;
    background: var(--clr-glass-overlay);
    border-radius: 5px;
    font-size: 0.8rem;
    color: var(--clr-accent-secondary);
    margin-bottom: 1rem;
    transform: translateZ(10px);
}

.service-text {
    transform: translateZ(20px);
    margin-bottom: 0;
}

/* -------------------------------------------------------------------------
   VISION & MISSION
   ------------------------------------------------------------------------- */
.vm-section {
    padding: 8rem 0;
}

.vm-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 4rem;
}

.vision-box, .mission-box {
    background: var(--clr-surface);
    border: 1px solid var(--clr-surface-border);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: var(--shadow-soft);
    height: 100%;
    transition: background-color var(--trans-normal), border-color var(--trans-normal);
}

.vision-box {
    background: linear-gradient(to bottom right, var(--clr-surface), var(--clr-accent-alpha-10));
    border-color: var(--clr-accent-alpha-30);
}

.vm-icon {
    width: 60px; height: 60px;
    background: var(--grad-primary);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1.5rem;
}

.mission-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.mission-list li {
    display: flex;
    gap: 1rem;
    font-size: 1.05rem;
    color: var(--clr-text-muted);
}

.mission-list i {
    font-size: 1.5rem;
    margin-top: 0.2rem;
}

/* -------------------------------------------------------------------------
   CORE VALUES
   ------------------------------------------------------------------------- */
.values-section {
    padding: 8rem 0;
    padding-bottom: 12rem;
    background: var(--clr-bg-alt);
}

.values-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.value-item {
    background: var(--clr-surface);
    border: 1px solid var(--clr-surface-border);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    min-width: 200px;
    flex: 1 1 200px;
    transition: all var(--trans-normal);
    position: relative;
    overflow: hidden;
}

.value-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 2px;
    background: var(--grad-primary);
    transform: scaleX(0);
    transition: transform var(--trans-normal);
    transform-origin: left;
}

.value-item:hover {
    transform: translateY(-10px);
    background: hsla(225, 30%, 20%, 0.8);
}

.value-item:hover::before { transform: scaleX(1); }

.value-icon {
    font-size: 2.5rem;
    color: var(--clr-accent-secondary);
    margin-bottom: 1rem;
}

.value-letter {
    font-size: 4rem;
    line-height: 1;
    background: var(--grad-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    margin-bottom: 0.5rem;
    opacity: 0.2;
    position: absolute;
    right: 20px; bottom: 20px;
}

.value-title {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.value-desc {
    font-size: 0.9rem;
    margin-bottom: 0;
    position: relative;
    z-index: 1;
}

/* -------------------------------------------------------------------------
   FOOTER
   ------------------------------------------------------------------------- */
.site-footer {
    background: var(--clr-bg-alt);
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--clr-surface-border);
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
    text-align: center;
}

.footer-brand p {
    margin-top: 0.5rem;
}

.footer-bottom {
    width: 100%;
    padding-top: 2rem;
    border-top: 1px solid var(--clr-surface-border);
    font-size: 0.9rem;
}

/* -------------------------------------------------------------------------
   RESPONSIVE
   ------------------------------------------------------------------------- */
@media (max-width: 992px) {
    .hero-container, .about-container, .vm-container {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .about-visual {
        order: -1;
    }
    
    .hero-title {
        text-align: center;
    }
    
    .hero-description {
        margin: 0 auto 2.5rem;
        text-align: center;
    }
    
    .hero-actions {
        justify-content: center;
    }
}

.theme-toggle {
    background: transparent;
    border: 1px solid var(--clr-surface-border);
    color: var(--clr-text);
    width: 40px; height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all var(--trans-fast);
    backdrop-filter: blur(5px);
}

.theme-toggle:hover {
    background: var(--clr-surface);
    color: var(--clr-accent);
    transform: rotate(15deg);
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: absolute;
        top: 100%; left: 0; width: 100%;
        background: var(--clr-surface);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        flex-direction: column;
        gap: 0;
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: clip-path var(--trans-normal);
        border-bottom: 1px solid var(--clr-surface-border);
        border-top: 1px solid var(--clr-surface-border);
    }
    
    .nav-links.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
        padding-bottom: 1rem;
    }
    
    .nav-links li {
        width: 100%;
        text-align: center;
    }
    
    .nav-links a {
        display: block;
        padding: 1.2rem;
        border-bottom: 1px solid var(--clr-glass-overlay);
    }
    
    .nav-links li:last-child a {
        border-bottom: none;
    }

    .theme-toggle {
        margin: 1.5rem auto;
    }

    /* Section Spacing Adjustments for Mobile */
    .hero-section {
        padding-top: 100px;
        min-height: auto;
    }
    
    .about-section, .services-section, .vm-section, .values-section {
        padding: 4.5rem 0;
    }
    
    .values-section {
        padding-bottom: 7rem;
    }

    /* Smaller About Visual Scale */
    .about-container {
        gap: 2rem;
    }

    .about-visual {
        height: 300px;
    }

    .main-panel {
        width: 100%;
        transform: translateZ(10px);
    }

    .floating-panel {
        font-size: 0.85rem;
        padding: 0.8rem 1rem;
    }

    .panel-1 {
        right: -5%; top: 5%;
    }

    .panel-2 {
        right: 5%; bottom: 5%;
    }
    
    .cube-container {
        width: 200px;
        height: 200px;
    }
    
    .face {
        width: 200px; height: 200px;
    }
    
    .front  { transform: translateZ(100px); }
    .back   { transform: rotateY(180deg) translateZ(100px); }
    .right  { transform: rotateY(90deg) translateZ(100px); }
    .left   { transform: rotateY(-90deg) translateZ(100px); }
    .top    { transform: rotateX(90deg) translateZ(100px); }
    .bottom { transform: rotateX(-90deg) translateZ(100px); }
}