/* =============================================================================
   AI Image Generator - Design System
   Based on BuildWithYasar Design System v1.0.0
   Framework: Tailwind CSS + Alpine.js
   ============================================================================= */

/* -----------------------------------------------------------------------------
   Typography - Space Grotesk Font
   ----------------------------------------------------------------------------- */
@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&display=swap');

:root {
    /* Brand Colors */
    --brand-gold: #EE8F00;
    --brand-light: #FFB040;
    --brand-dark: #B36B00;

    /* Surface Colors (Dark Mode) */
    --surface-900: #050505;
    --surface-800: #0F0F0F;
    --surface-700: #1A1A1A;
    --surface-600: #262626;

    /* Feedback Colors */
    --feedback-error: #ef4444;
    --feedback-error-bg: rgba(239, 68, 68, 0.2);
    --feedback-success: #15803d;
    --feedback-success-bg: rgba(34, 197, 94, 0.2);
    --feedback-warning: #f59e0b;
    --feedback-warning-bg: rgba(245, 158, 11, 0.2);

    /* Neutral Colors */
    --neutral-white: #ffffff;
    --neutral-gray-50: #f9fafb;
    --neutral-gray-100: #f3f4f6;
    --neutral-gray-200: #e5e7eb;
    --neutral-gray-300: #d1d5db;
    --neutral-gray-400: #9ca3af;
    --neutral-gray-500: #6b7280;
    --neutral-gray-900: #111827;

    /* Shadows */
    --shadow-primary-glow: 0 4px 14px 0 rgba(238, 143, 0, 0.39);
    --shadow-primary-glow-hover: 0 6px 20px rgba(238, 143, 0, 0.23);
    --shadow-card: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-input-focus: 0 0 0 3px rgba(238, 143, 0, 0.3);
    --shadow-progress-bar: 0 0 10px rgba(238, 143, 0, 0.5);

    /* Animation Durations */
    --duration-fast: 200ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
}

/* Light mode variables */
.light {
    --bg-primary: var(--neutral-white);
    --bg-secondary: var(--neutral-gray-50);
    --bg-tertiary: var(--neutral-gray-100);
    --text-primary: var(--neutral-gray-900);
    --text-secondary: var(--neutral-gray-500);
    --text-tertiary: var(--neutral-gray-400);
    --border-color: var(--neutral-gray-200);
}

/* Dark mode variables (default) */
.dark {
    --bg-primary: var(--surface-900);
    --bg-secondary: var(--surface-800);
    --bg-tertiary: var(--surface-700);
    --text-primary: var(--neutral-white);
    --text-secondary: var(--neutral-gray-400);
    --text-tertiary: var(--neutral-gray-500);
    --border-color: var(--surface-700);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

html {
    font-family: 'Space Grotesk', sans-serif;
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: background-color var(--duration-normal) ease,
                color var(--duration-normal) ease;
}

/* -----------------------------------------------------------------------------
   Custom Scrollbar
   ----------------------------------------------------------------------------- */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

.dark ::-webkit-scrollbar-track {
    background: var(--surface-800);
}

.dark ::-webkit-scrollbar-thumb {
    background: var(--surface-600);
    border-radius: 4px;
}

.dark ::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-gray-500);
}

.light ::-webkit-scrollbar-track {
    background: var(--neutral-gray-100);
}

.light ::-webkit-scrollbar-thumb {
    background: var(--neutral-gray-300);
    border-radius: 4px;
}

.light ::-webkit-scrollbar-thumb:hover {
    background: var(--neutral-gray-400);
}

/* -----------------------------------------------------------------------------
   Text Gradient Animation (Shine Effect)
   ----------------------------------------------------------------------------- */
.text-gradient-animate {
    background: linear-gradient(to right, #ffffff, var(--brand-gold), #ffffff);
    background-size: 200% auto;
    color: #000;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: shine 5s linear infinite;
}

.light .text-gradient-animate {
    background: linear-gradient(to right, var(--neutral-gray-900), var(--brand-gold), var(--neutral-gray-900));
    background-size: 200% auto;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

@keyframes shine {
    to {
        background-position: 200% center;
    }
}

/* -----------------------------------------------------------------------------
   Button Beam Effect
   ----------------------------------------------------------------------------- */
.btn-beam {
    position: relative;
    overflow: hidden;
}

.btn-beam::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transform: skewX(-25deg);
    animation: beam 3s infinite;
    pointer-events: none;
}

@keyframes beam {
    0% { left: -100%; }
    20% { left: 200%; }
    100% { left: 200%; }
}

/* -----------------------------------------------------------------------------
   Animations
   ----------------------------------------------------------------------------- */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(30px);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
    100% { transform: translateX(0); }
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: var(--shadow-primary-glow);
    }
    50% {
        box-shadow: var(--shadow-primary-glow-hover);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Animation Utility Classes */
.animate-fade-in-up {
    animation: fadeInUp var(--duration-slow) ease-out forwards;
}

.animate-slide-in-right {
    animation: slideInRight var(--duration-slow) ease-out forwards;
}

.animate-shake {
    animation: shake 0.5s ease-in-out;
}

.animate-pulse-glow {
    animation: pulse-glow 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

/* Stagger children animations */
.stagger-children > * {
    opacity: 0;
    animation: fadeInUp var(--duration-slow) ease-out forwards;
}

.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 100ms; }
.stagger-children > *:nth-child(3) { animation-delay: 200ms; }
.stagger-children > *:nth-child(4) { animation-delay: 300ms; }
.stagger-children > *:nth-child(5) { animation-delay: 400ms; }
.stagger-children > *:nth-child(6) { animation-delay: 500ms; }

/* -----------------------------------------------------------------------------
   Component Styles
   ----------------------------------------------------------------------------- */

/* Primary Button */
.btn-primary {
    background-color: var(--brand-gold);
    color: #000000;
    font-weight: 700;
    border-radius: 0.75rem;
    padding: 0.75rem 2rem;
    box-shadow: var(--shadow-primary-glow);
    transition: all var(--duration-normal) ease;
    cursor: pointer;
    border: none;
}

.btn-primary:hover {
    background-color: var(--brand-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary-glow-hover);
}

.btn-primary:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
}

/* Secondary Button */
.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--neutral-gray-300);
    color: var(--neutral-gray-500);
    border-radius: 0.75rem;
    padding: 0.75rem 1.5rem;
    transition: all var(--duration-normal) ease;
    cursor: pointer;
}

.dark .btn-secondary {
    border-color: var(--surface-700);
    color: var(--neutral-gray-400);
}

.btn-secondary:hover {
    background-color: var(--neutral-gray-50);
    border-color: var(--neutral-gray-400);
    color: var(--neutral-gray-900);
}

.dark .btn-secondary:hover {
    background-color: var(--surface-700);
    border-color: var(--surface-600);
    color: var(--neutral-white);
}

/* Ghost Button */
.btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
    border-radius: 0.75rem;
    padding: 0.75rem 1.5rem;
    transition: all var(--duration-normal) ease;
    cursor: pointer;
    border: none;
}

.btn-ghost:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Icon Button */
.btn-icon {
    border-radius: 9999px;
    padding: 0.5rem;
    background-color: transparent;
    color: var(--text-secondary);
    transition: all var(--duration-fast) ease;
    cursor: pointer;
    border: none;
}

.btn-icon:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

/* Input Styles */
.input-default {
    background-color: var(--neutral-gray-50);
    border: 1px solid var(--neutral-gray-200);
    border-radius: 0.75rem;
    padding: 0.75rem 1rem;
    color: var(--neutral-gray-900);
    transition: all var(--duration-normal) ease;
    width: 100%;
}

.dark .input-default {
    background-color: var(--surface-900);
    border-color: var(--surface-700);
    color: var(--neutral-white);
}

.input-default:focus {
    outline: none;
    border-color: var(--brand-gold);
    box-shadow: 0 0 0 1px var(--brand-gold);
}

.input-default::placeholder {
    color: var(--neutral-gray-400);
}

.dark .input-default::placeholder {
    color: var(--neutral-gray-500);
}

/* Card Styles */
.card {
    background-color: var(--bg-secondary);
    border-radius: 1rem;
    border: 1px solid var(--border-color);
    transition: all var(--duration-normal) ease;
}

.card-elevated {
    background-color: var(--bg-secondary);
    border-radius: 1rem;
    box-shadow: var(--shadow-card);
}

.card:hover {
    border-color: var(--brand-gold);
}

/* Theme Toggle */
.theme-toggle {
    width: 50px;
    height: 24px;
    border-radius: 9999px;
    background-color: var(--surface-700);
    position: relative;
    cursor: pointer;
    transition: background-color var(--duration-normal) ease;
}

.light .theme-toggle {
    background-color: var(--neutral-gray-200);
}

.theme-toggle-knob {
    width: 20px;
    height: 20px;
    border-radius: 9999px;
    background-color: var(--neutral-white);
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform var(--duration-normal) ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.light .theme-toggle-knob {
    transform: translateX(26px);
    background-color: var(--brand-gold);
}

/* Progress Bar */
.progress-bar {
    height: 4px;
    background-color: var(--surface-700);
    border-radius: 9999px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background-color: var(--brand-gold);
    border-radius: 9999px;
    box-shadow: var(--shadow-progress-bar);
    transition: width var(--duration-normal) ease;
}

/* Mention Popup */
.mention-popup {
    animation: slideUp 0.15s ease-out;
}

/* Dropzone */
.dropzone {
    border: 2px dashed var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    transition: all var(--duration-normal) ease;
    cursor: pointer;
}

.dropzone:hover,
.dropzone.drag-over {
    border-color: var(--brand-gold);
    background-color: rgba(238, 143, 0, 0.05);
}

.dropzone.drag-over {
    transform: scale(1.02);
}

/* Image Grid Item */
.image-grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 0.75rem;
    cursor: pointer;
    transition: transform var(--duration-normal) ease;
}

.image-grid-item:hover {
    transform: scale(1.02);
}

.image-grid-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.5), transparent);
    opacity: 0;
    transition: opacity var(--duration-normal) ease;
}

.image-grid-item:hover::after {
    opacity: 1;
}

/* Tooltip */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 0.75rem;
    background-color: var(--surface-800);
    color: var(--neutral-white);
    font-size: 0.75rem;
    border-radius: 0.5rem;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--duration-fast) ease;
    margin-bottom: 0.5rem;
}

.tooltip:hover::after {
    opacity: 1;
}

/* Badge */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-gold {
    background-color: rgba(238, 143, 0, 0.2);
    color: var(--brand-gold);
}

.badge-success {
    background-color: var(--feedback-success-bg);
    color: var(--feedback-success);
}

.badge-error {
    background-color: var(--feedback-error-bg);
    color: var(--feedback-error);
}

/* Loading Spinner */
.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--surface-700);
    border-top-color: var(--brand-gold);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    padding: 1rem 1.5rem;
    border-radius: 0.75rem;
    background-color: var(--surface-800);
    color: var(--neutral-white);
    box-shadow: var(--shadow-card);
    animation: slideInRight var(--duration-normal) ease-out;
    z-index: 100;
}

.toast-success {
    border-left: 4px solid var(--feedback-success);
}

.toast-error {
    border-left: 4px solid var(--feedback-error);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    animation: fadeIn var(--duration-fast) ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 1rem;
    max-width: 28rem;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: fadeInUp var(--duration-normal) ease-out;
}

/* Split View Layout */
.split-view {
    display: grid;
    grid-template-columns: 380px 1fr;
    height: calc(100vh - 64px);
}

@media (max-width: 1024px) {
    .split-view {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
    }
}

.split-view-panel {
    overflow-y: auto;
    padding: 1.5rem;
}

.split-view-canvas {
    background-color: var(--surface-900);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.dark .split-view-canvas {
    background: radial-gradient(circle at center, var(--surface-800) 0%, var(--surface-900) 100%);
}