@tailwind base;
@tailwind components;
@tailwind utilities;

:root {
    --primary-white: #FFFFFF;
    --soft-white: #F5F9FF;
    --electric-blue: #00D9FF;
    --neon-blue: #0095FF;
    --sky-blue: #38BDF8;
    --dark-text: #0F172A;
    --secondary-text: #475569;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.2);

    /* Fluid Typography Scale */
    --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --text-xl: clamp(1.25rem, 1rem + 1.25vw, 1.5rem);
    --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
    --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
    --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3.5rem);
    --text-5xl: clamp(2.5rem, 2rem + 3.5vw, 4.5rem);
    --text-6xl: clamp(3rem, 2.5rem + 4vw, 5.5rem);

    /* Fluid Spacing Scale */
    --space-xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.5rem);
    --space-sm: clamp(0.5rem, 0.4rem + 0.5vw, 0.75rem);
    --space-md: clamp(1rem, 0.8rem + 1vw, 1.5rem);
    --space-lg: clamp(1.5rem, 1.2rem + 1.5vw, 2.5rem);
    --space-xl: clamp(2rem, 1.5rem + 2.5vw, 4rem);
    --space-2xl: clamp(3rem, 2rem + 4vw, 6rem);
}

html {
    scroll-behavior: smooth;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
    background-color: var(--primary-white);
    color: var(--dark-text);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", sans-serif;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.font-ubuntu {
    font-family: 'Ubuntu', sans-serif;
}

/* Glassmorphism */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

.glass-nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

/* Liquid Glass Navigation */
.liquid-glass-nav {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.3) 0%, rgba(255, 255, 255, 0.05) 100%);
    backdrop-filter: blur(50px) saturate(200%);
    -webkit-backdrop-filter: blur(50px) saturate(200%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 
        0 15px 35px -5px rgba(0, 0, 0, 0.15),
        inset 0 2px 2px rgba(255, 255, 255, 0.8),
        inset 0 -1px 2px rgba(255, 255, 255, 0.3);
}

/* SwiftUI Liquid Glass: Prominent Button */
.glass-button-prominent {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.7) 0%, rgba(0, 149, 255, 0.5) 100%);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    border: 1px solid rgba(255, 255, 255, 0.4);
    box-shadow: 
        0 8px 24px rgba(0, 217, 255, 0.25),
        inset 0 1px 2px rgba(255, 255, 255, 0.7),
        inset 0 -1px 2px rgba(0, 0, 0, 0.1);
    color: white;
}
.glass-button-prominent:hover {
    background: linear-gradient(135deg, rgba(0, 217, 255, 0.8) 0%, rgba(0, 149, 255, 0.6) 100%);
    box-shadow: 
        0 12px 30px rgba(0, 217, 255, 0.35),
        inset 0 1px 2px rgba(255, 255, 255, 0.9),
        inset 0 -1px 2px rgba(0, 0, 0, 0.1);
}

/* Electric Blue Glow */
.glow-text {
    text-shadow: 0 0 10px rgba(0, 217, 255, 0.5);
}

.glow-button {
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.4);
    transition: all 0.3s ease;
}

.glow-button:hover {
    box-shadow: 0 0 25px rgba(0, 217, 255, 0.6);
    transform: translateY(-2px);
}

/* Custom Utilities */
.text-electric-blue { color: var(--electric-blue); }
.bg-electric-blue { background-color: var(--electric-blue); }
.border-electric-blue { border-color: var(--electric-blue); }

/* Animations */
@keyframes float {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

/* Background Gradients */
.hero-gradient {
    background: radial-gradient(circle at 50% 50%, rgba(0, 217, 255, 0.05) 0%, rgba(255, 255, 255, 1) 70%);
}

.bg-mesh {
    background-image: 
        radial-gradient(at 0% 0%, hsla(190,100%,95%,1) 0, transparent 50%), 
        radial-gradient(at 50% 0%, hsla(200,100%,98%,1) 0, transparent 50%), 
        radial-gradient(at 100% 0%, hsla(190,100%,95%,1) 0, transparent 50%);
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease-out;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Scroll Progress Bar */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 4px;
    background: linear-gradient(to right, var(--electric-blue), var(--neon-blue));
    z-index: 1000;
}

/* Cursor Glow */
#cursor-glow {
    position: fixed;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 217, 255, 0.15) 0%, rgba(0, 217, 255, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -1;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

/* Responsive Grid Background */
.bg-grid {
    background-size: 40px 40px;
    background-image: 
        linear-gradient(to right, rgba(0, 217, 255, 0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 217, 255, 0.05) 1px, transparent 1px);
}

/* Interaction Design Patterns */
.btn-interactive {
    transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.2s ease-out;
}
.btn-interactive:hover {
    transform: scale(1.02);
}
.btn-interactive:active {
    transform: scale(0.98);
}

.ripple-wrapper {
    position: relative;
    overflow: hidden;
}
.ripple-span {
    position: absolute;
    border-radius: 50%;
    transform: scale(0);
    animation: ripple 600ms linear;
    background-color: rgba(255, 255, 255, 0.3);
    pointer-events: none;
}
@keyframes ripple {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

.page-transition-enter {
    animation: pageFadeIn 0.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
@keyframes pageFadeIn {
    from {
        opacity: 0;
        transform: translateY(15px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

/* Responsive Layout Utilities */
.grid-auto-fit {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
    gap: var(--space-lg);
}

.min-h-dvh {
    min-height: 100vh; /* fallback */
    min-height: 100dvh;
}

/* Glassmorphic Login Modal & Toast Styles */
.custom-login-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

.custom-login-modal.active {
    opacity: 1;
    pointer-events: auto;
}

.login-modal-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 
        0 25px 50px -12px rgba(0, 0, 0, 0.15),
        0 0 40px rgba(0, 217, 255, 0.1);
    transform: scale(0.9) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.custom-login-modal.active .login-modal-card {
    transform: scale(1) translateY(0);
}

.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 3000;
    display: flex;
    flex-col: column;
    flex-direction: column;
    gap: 12px;
    pointer-events: none;
}

.toast-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 217, 255, 0.3);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08);
    pointer-events: auto;
    transform: translateX(120%);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), opacity 0.4s ease;
    opacity: 0;
}

.toast-card.active {
    transform: translateX(0);
    opacity: 1;
}