/**
 * Custom Styles for VerdantGrounds Survey Platform
 * Extends Tailwind CSS with custom animations and components
 */

/* ═══════════════════════════════════════════════════════════════
   CSS VARIABLES
   ═══════════════════════════════════════════════════════════════ */

:root {
    --vg-green-primary: #16a34a;
    --vg-green-dark: #15803d;
    --vg-green-light: #22c55e;
    --transition-fast: 150ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
}

/* ═══════════════════════════════════════════════════════════════
   BASE STYLES
   ═══════════════════════════════════════════════════════════════ */

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Focus styles for accessibility */
*:focus-visible {
    outline: 2px solid var(--vg-green-primary);
    outline-offset: 2px;
}

/* Remove default focus for mouse users */
*:focus:not(:focus-visible) {
    outline: none;
}

/* ═══════════════════════════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════════════════════════ */

/* Fade in animation */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

/* Modal animation */
@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(-10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.animate-modal-in {
    animation: modalIn var(--transition-normal) ease-out;
}

/* Pulse animation for notifications */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

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

/* Slide up animation */
@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-slide-up {
    animation: slideUp var(--transition-normal) ease-out;
}

/* Staggered card animation */
.survey-card {
    animation: slideUp var(--transition-slow) ease-out;
    animation-fill-mode: both;
}

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

/* Spin animation */
@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.animate-spin {
    animation: spin 1s linear infinite;
}

/* ═══════════════════════════════════════════════════════════════
   SURVEY CARDS
   ═══════════════════════════════════════════════════════════════ */

.survey-card {
    transform: translateY(0);
    transition: transform var(--transition-normal) ease,
                box-shadow var(--transition-normal) ease;
}

.survey-card:hover {
    transform: translateY(-4px);
}

/* Card gradient backgrounds by category */
.survey-card[data-category="automation"] .card-header {
    background: linear-gradient(135deg, #16a34a 0%, #0d9488 100%);
}

.survey-card[data-category="research"] .card-header {
    background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
}

.survey-card[data-category="feedback"] .card-header {
    background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
}

.survey-card[data-category="market"] .card-header {
    background: linear-gradient(135deg, #8b5cf6 0%, #ec4899 100%);
}

/* Status badges */
.status-badge.active {
    background: rgba(255, 255, 255, 0.25);
    color: white;
}

.status-badge.coming-soon {
    background: rgba(251, 191, 36, 0.9);
    color: #1f2937;
}

.status-badge.closed {
    background: rgba(107, 114, 128, 0.9);
    color: white;
}

/* ═══════════════════════════════════════════════════════════════
   LANGUAGE SELECTOR
   ═══════════════════════════════════════════════════════════════ */

#language-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 0.5rem center;
    background-repeat: no-repeat;
    background-size: 1.5em 1.5em;
    padding-right: 2.5rem;
}

#language-select:hover {
    border-color: var(--vg-green-primary);
}

/* ═══════════════════════════════════════════════════════════════
   MODAL STYLES
   ═══════════════════════════════════════════════════════════════ */

#notify-modal {
    backdrop-filter: blur(4px);
}

#notify-modal > div {
    max-height: 90vh;
    overflow-y: auto;
}

/* ═══════════════════════════════════════════════════════════════
   BUTTONS
   ═══════════════════════════════════════════════════════════════ */

button, .btn {
    transition: all var(--transition-fast) ease;
}

button:active:not(:disabled), .btn:active:not(:disabled) {
    transform: scale(0.98);
}

/* Primary button */
.btn-primary {
    background-color: var(--vg-green-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--vg-green-dark);
}

/* ═══════════════════════════════════════════════════════════════
   FORM INPUTS
   ═══════════════════════════════════════════════════════════════ */

input[type="email"],
input[type="text"],
textarea {
    transition: border-color var(--transition-fast) ease,
                box-shadow var(--transition-fast) ease;
}

input[type="email"]:focus,
input[type="text"]:focus,
textarea:focus {
    border-color: var(--vg-green-primary);
    box-shadow: 0 0 0 3px rgba(22, 163, 74, 0.1);
}

/* ═══════════════════════════════════════════════════════════════
   EMPTY STATE
   ═══════════════════════════════════════════════════════════════ */

#empty-state {
    animation: fadeIn var(--transition-slow) ease-out;
}

/* ═══════════════════════════════════════════════════════════════
   LOADING STATES
   ═══════════════════════════════════════════════════════════════ */

.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Skeleton loading */
.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 25%,
        #e0e0e0 50%,
        #f0f0f0 75%
    );
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

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

/* ═══════════════════════════════════════════════════════════════
   UTILITY CLASSES
   ═══════════════════════════════════════════════════════════════ */

/* Line clamp for text truncation */
.line-clamp-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.line-clamp-3 {
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Gradient text */
.text-gradient {
    background: linear-gradient(135deg, var(--vg-green-primary), var(--vg-green-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Glass effect */
.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* ═══════════════════════════════════════════════════════════════
   RESPONSIVE ADJUSTMENTS
   ═══════════════════════════════════════════════════════════════ */

@media (max-width: 640px) {
    /* Smaller language selector on mobile */
    #language-select {
        font-size: 0.875rem;
        padding: 0.5rem 2rem 0.5rem 0.75rem;
    }

    /* Adjust card animations */
    .survey-card {
        animation-delay: 0ms !important;
    }
}

/* ═══════════════════════════════════════════════════════════════
   PRINT STYLES
   ═══════════════════════════════════════════════════════════════ */

@media print {
    body {
        background: white !important;
    }

    #language-select,
    #notify-modal,
    button {
        display: none !important;
    }

    .survey-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #e5e7eb;
    }
}

/* ═══════════════════════════════════════════════════════════════
   REDUCED MOTION
   ═══════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ═══════════════════════════════════════════════════════════════
   DARK MODE PREPARATION (for future)
   ═══════════════════════════════════════════════════════════════ */

@media (prefers-color-scheme: dark) {
    /* Dark mode styles can be added here in the future */
}