/* ============================================================
   VONDL — Global Design System
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    --vondl-red: #E88D8D;
    --vondl-red-deep: #D4726E;
    --vondl-red-light: #F4B0B0;
    --vondl-orange: #F0A868;
    --vondl-orange-light: #F5C49A;
    --vondl-yellow: #F5D76E;
    --vondl-yellow-light: #F9E8A0;

    --vondl-dark: #1A1A2E;
    --vondl-dark-alt: #16213E;
    --vondl-dark-surface: #0F0F23;
    --vondl-text: #2C3E50;
    --vondl-text-light: #7F8C9B;
    --vondl-text-muted: #A0AEC0;
    --vondl-white: #FFFFFF;
    --vondl-off-white: #FFF8F0;
    --vondl-bg-light: #FFFAF5;

    --vondl-glass-bg: rgba(255, 255, 255, 0.06);
    --vondl-glass-border: rgba(255, 255, 255, 0.10);
    --vondl-glass-bg-light: rgba(255, 255, 255, 0.70);
    --vondl-glass-border-light: rgba(255, 255, 255, 0.40);

    --vondl-gradient: linear-gradient(135deg, var(--vondl-red), var(--vondl-orange), var(--vondl-yellow));
    --vondl-gradient-warm: linear-gradient(135deg, var(--vondl-red-light), var(--vondl-orange-light), var(--vondl-yellow-light));
    --vondl-gradient-dark: linear-gradient(135deg, #1A1A2E, #16213E, #0F3460);

    --vondl-radius-sm: 8px;
    --vondl-radius-md: 16px;
    --vondl-radius-lg: 24px;
    --vondl-radius-xl: 32px;

    --vondl-shadow-sm: 0 1px 4px rgba(0, 0, 0, 0.04);
    --vondl-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.05);
    --vondl-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.07);
    --vondl-shadow-glow: 0 4px 20px rgba(232, 141, 141, 0.15);

    --vondl-font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --vondl-font-heading: 'Space Grotesk', 'Inter', sans-serif;

    --vondl-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --vondl-transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--vondl-font-body);
    color: var(--vondl-text);
    background: var(--vondl-white);
    line-height: 1.7;
    overflow-x: hidden;
}

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

h1:focus {
    outline: none;
}

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

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

/* --- Utility Classes --- */
.vondl-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.vondl-section {
    padding: 120px 0;
    position: relative;
}

.vondl-section-dark {
    background: var(--vondl-dark);
    color: var(--vondl-white);
}

.vondl-section-light {
    background: var(--vondl-bg-light);
}

.section-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--vondl-text-muted);
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 20px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--vondl-text-light);
    max-width: 560px;
    line-height: 1.8;
}

.gradient-text {
    background: var(--vondl-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* --- Buttons --- */
.vondl-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 32px;
    border: none;
    border-radius: 50px;
    font-family: var(--vondl-font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--vondl-transition);
    position: relative;
    overflow: hidden;
}

.vondl-btn-primary {
    background: var(--vondl-gradient);
    color: var(--vondl-white);
}

.vondl-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: var(--vondl-shadow-glow);
}

.vondl-btn-primary:active {
    transform: translateY(0);
}

.vondl-btn-outline {
    background: transparent;
    color: var(--vondl-white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.vondl-btn-outline:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: rgba(255, 255, 255, 0.5);
}

.vondl-btn-dark {
    background: var(--vondl-dark);
    color: var(--vondl-white);
}

.vondl-btn-dark:hover {
    background: var(--vondl-dark-alt);
}

/* --- Glass Card --- */
.glass-card {
    background: var(--vondl-glass-bg-light);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--vondl-glass-border-light);
    border-radius: var(--vondl-radius-md);
    transition: all var(--vondl-transition);
}

.glass-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--vondl-shadow-md);
}

.glass-card-dark {
    background: var(--vondl-glass-bg);
    border: 1px solid var(--vondl-glass-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--vondl-radius-md);
    transition: all var(--vondl-transition);
}

.glass-card-dark:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.14);
    transform: translateY(-2px);
}

/* --- Scroll Animation Classes --- */
.animate-on-scroll {
    opacity: 0;
    transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.animate-on-scroll.fade-up {
    transform: translateY(24px);
}

.animate-on-scroll.fade-left {
    transform: translateX(-24px);
}

.animate-on-scroll.fade-right {
    transform: translateX(24px);
}

.animate-on-scroll.fade-scale {
    transform: scale(0.92);
}

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

.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1),
                transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Keyframe Animations --- */
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes float-delayed {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-18px) rotate(3deg); }
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 20px rgba(232, 141, 141, 0.2); }
    50% { box-shadow: 0 0 40px rgba(232, 141, 141, 0.4); }
}

@keyframes slide-in-up {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slide-in-left {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes hero-text-reveal {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes spin-slow {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- Blazor defaults --- */
.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid var(--vondl-red-deep);
}

.validation-message {
    color: var(--vondl-red-deep);
    font-size: 0.85rem;
    margin-top: 4px;
}

.blazor-error-boundary {
    background: var(--vondl-red-deep);
    padding: 1rem 1rem 1rem 2rem;
    color: white;
    border-radius: var(--vondl-radius-sm);
}

.blazor-error-boundary::after {
    content: "An error has occurred.";
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .vondl-section {
        padding: 96px 0;
    }

    .vondl-container {
        padding: 0 20px;
    }
}

@media (max-width: 768px) {
    .vondl-section {
        padding: 72px 0;
    }

    .vondl-container {
        padding: 0 16px;
    }

    .section-title {
        font-size: clamp(1.6rem, 6vw, 2.2rem);
    }

    .section-subtitle {
        font-size: 0.92rem;
    }

    .vondl-btn {
        padding: 12px 24px;
        font-size: 0.9rem;
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .vondl-section {
        padding: 56px 0;
    }

    .vondl-container {
        padding: 0 14px;
    }

    .section-label {
        font-size: 0.7rem;
    }

    .section-title {
        font-size: clamp(1.5rem, 7vw, 1.9rem);
        margin-bottom: 14px;
    }

    .section-subtitle {
        font-size: 0.88rem;
    }
}

/* --- Touch-friendly defaults --- */
@media (hover: none) and (pointer: coarse) {
    .glass-card:hover,
    .glass-card-dark:hover {
        transform: none;
    }

    .showcase-tile:hover {
        transform: none;
    }

    .showcase-tile:hover .tile-bg {
        transform: none;
    }
}

/* --- No-JS & Reduced-Motion Fallback --- */
@media (scripting: none), (prefers-reduced-motion: reduce) {
    .animate-on-scroll,
    .stagger-item {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* --- Skip-to-Content Link --- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 10000;
    padding: 12px 24px;
    background: var(--vondl-dark);
    color: var(--vondl-white);
    border-radius: var(--vondl-radius-sm);
    font-weight: 600;
    text-decoration: none;
}

.skip-link:focus {
    top: 16px;
}