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

:root {
    /* Couleurs principales - Design sobre */
    --primary-gradient: linear-gradient(135deg, #5e72e4 0%, #825ee4 100%);
    --secondary-gradient: linear-gradient(135deg, #fb6340 0%, #fbb140 100%);
    --blue-gradient: linear-gradient(135deg, #11cdef 0%, #1171ef 100%);
    --green-gradient: linear-gradient(135deg, #2dce89 0%, #2dcecc 100%);
    --orange-gradient: linear-gradient(135deg, #fb6340 0%, #fbb140 100%);

    /* Couleurs unies */
    --color-primary: #5e72e4;
    --color-secondary: #825ee4;
    --color-success: #2dce89;
    --color-warning: #fbb140;
    --color-danger: #fb6340;
    --color-info: #11cdef;

    /* Nuances de gris */
    --color-white: #ffffff;
    --color-light: #f8f9fa;
    --color-gray-100: #f1f3f5;
    --color-gray-200: #e9ecef;
    --color-gray-300: #dee2e6;
    --color-gray-400: #ced4da;
    --color-gray-500: #adb5bd;
    --color-gray-600: #6c757d;
    --color-gray-700: #495057;
    --color-gray-800: #343a40;
    --color-gray-900: #212529;

    /* Espacements */
    --spacing-xs: 5px;
    --spacing-sm: 10px;
    --spacing-md: 15px;
    --spacing-lg: 20px;
    --spacing-xl: 30px;
    --spacing-xxl: 40px;

    /* Bordures */
    --border-radius-sm: 10px;
    --border-radius-md: 15px;
    --border-radius-lg: 20px;
    --border-radius-xl: 25px;

    /* Ombres */
    --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 20px rgba(0,0,0,0.15);
    --shadow-xl: 0 12px 30px rgba(0,0,0,0.2);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Polices */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-display: 'Poppins', var(--font-primary);
}

@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

body {
    font-family: var(--font-primary);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: var(--spacing-lg);
    position: relative;
    overflow-x: hidden;
}

/* Effet de particules en arrière-plan */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255,255,255,0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255,255,255,0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* ==========================================
   CONTAINER & LAYOUT
   ========================================== */
.container {
    max-width: 900px;
    margin: 0 auto;
    background: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    position: relative;
    z-index: 1;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================
   HEADER
   ========================================== */
.header {
    background: var(--primary-gradient);
    color: var(--color-white);
    padding: var(--spacing-xxl) var(--spacing-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: pulse 4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.5; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.header h1 {
    font-family: var(--font-display);
    font-size: 2.8em;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

.header p {
    font-size: 1.2em;
    opacity: 0.95;
    position: relative;
    z-index: 1;
    font-weight: 300;
}

/* ==========================================
   WEATHER INPUT SECTION
   ========================================== */
.weather-input {
    padding: var(--spacing-xxl) var(--spacing-xl);
    text-align: center;
    background: var(--color-light);
}

.city-input {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

input[type="text"] {
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius-xl);
    font-size: 16px;
    outline: none;
    transition: all var(--transition-normal);
    font-family: var(--font-primary);
    background: var(--color-white);
    min-width: 250px;
}

input[type="text"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

input[type="text"]::placeholder {
    color: var(--color-gray-400);
}

/* ==========================================
   BUTTONS
   ========================================== */
.button-group {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.btn {
    color: var(--color-white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-xl);
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all var(--transition-normal);
    min-width: 220px;
    font-family: var(--font-primary);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255,255,255,0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn:active {
    transform: translateY(-1px);
}

.btn-today {
    background: var(--secondary-gradient);
}

.btn-tomorrow {
    background: var(--green-gradient);
}

/* ==========================================
   LOADING SPINNER
   ========================================== */
.loading {
    display: none;
    text-align: center;
    padding: var(--spacing-xxl);
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--color-gray-200);
    border-top: 4px solid var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading p {
    color: var(--color-gray-600);
    font-size: 1.1em;
}

/* ==========================================
   WEATHER DISPLAY
   ========================================== */
.weather-display {
    display: none;
    padding: var(--spacing-xl);
    animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.weather-info {
    background: var(--color-white);
    color: var(--color-gray-900);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-200);
}

.weather-info h3 {
    font-family: var(--font-display);
    font-size: 1.8em;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.weather-details {
    display: grid;
    grid-template-columns: repeat(2, 1fr) repeat(2, 0.6fr);
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.weather-item {
    background: var(--color-gray-100);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-normal);
    border: 1px solid var(--color-gray-200);
}

.weather-item:hover {
    background: var(--color-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-sm);
}

.weather-item strong {
    font-size: 1.2em;
    display: block;
    margin-top: var(--spacing-xs);
}

/* Cards météo matin/après-midi */
.weather-period-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl) var(--spacing-lg) !important;
    text-align: center;
}

.weather-period-icon {
    font-size: 3em;
    margin-bottom: var(--spacing-sm);
}

.weather-period-label {
    font-size: 0.9em;
    color: var(--color-gray-600);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.weather-period-temp {
    font-size: 2em;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.weather-period-condition {
    font-size: 0.95em;
    color: var(--color-gray-700);
    font-weight: 500;
}

/* Infos supplémentaires (humidité, vent) */
.weather-extra-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-md) !important;
}

.weather-extra-info strong {
    color: var(--color-info);
}

/* ==========================================
   OUTFIT RECOMMENDATION
   ========================================== */
.outfit-recommendation {
    background: var(--color-light);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    margin-top: var(--spacing-lg);
}

.outfit-title {
    font-family: var(--font-display);
    font-size: 2em;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

.outfit-section {
    margin-bottom: var(--spacing-xl);
}

.outfit-section h4 {
    font-family: var(--font-display);
    font-size: 1.3em;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

.outfit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.outfit-item {
    background: var(--color-white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.outfit-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
}

.outfit-emoji {
    font-size: 3.5em;
    margin-bottom: var(--spacing-sm);
    animation: bounceIn 0.6s ease-out;
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.outfit-label {
    font-weight: 600;
    color: var(--color-gray-900);
    font-size: 1em;
    margin-bottom: var(--spacing-xs);
}

.outfit-category {
    color: var(--color-info);
    font-size: 0.9em;
}

/* ==========================================
   TIPS SECTION
   ========================================== */
.tips {
    background: var(--orange-gradient);
    color: var(--color-white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.tips h4 {
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-display);
    font-size: 1.3em;
    font-weight: 600;
}

.tips p {
    line-height: 1.6;
    font-size: 1.05em;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-sm);
    }

    .header h1 {
        font-size: 2em;
    }

    .header p {
        font-size: 1em;
    }

    .city-input {
        flex-direction: column;
        align-items: center;
    }

    .button-group {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        min-width: 280px;
        width: 100%;
        max-width: 350px;
    }

    input[type="text"] {
        width: 100%;
        max-width: 350px;
    }

    .weather-details {
        grid-template-columns: repeat(2, 1fr);
    }

    .outfit-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .weather-input,
    .weather-display,
    .outfit-recommendation {
        padding: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 1.6em;
    }

    .outfit-grid {
        grid-template-columns: 1fr;
    }

    .weather-details {
        grid-template-columns: 1fr;
    }

    .weather-period-card {
        grid-column: span 1;
    }

    .weather-extra-info {
        grid-column: span 1;
    }

    .outfit-emoji {
        font-size: 2.8em;
    }
}

/* ==========================================
   UTILITY CLASSES
   ========================================== */
.text-center {
    text-align: center;
}

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.hidden {
    display: none;
}

.visible {
    display: block;
}