/* ============================================================================
   WEBPHONE PROFESSIONNEL - STYLE WHATSAPP
   ============================================================================ */

/* Variables */
:root {
    /* Couleurs principales WhatsApp */
    --whatsapp-green: #25D366;
    --whatsapp-dark-green: #075E54;
    --whatsapp-teal: #128C7E;
    --whatsapp-light: #DCF8C6;
    
    /* Thème sombre */
    --bg-primary: #111B21;
    --bg-secondary: #202C33;
    --bg-tertiary: #2A3942;
    --bg-hover: #2A3942;
    
    /* Texte */
    --text-primary: #E9EDEF;
    --text-secondary: #8696A0;
    --text-muted: #667781;
    
    /* Accents */
    --accent-blue: #53BDEB;
    --accent-danger: #F15C6D;
    --accent-warning: #FFAB00;
    --accent-success: #00D95F;
    
    /* Bordures et ombres */
    --border-color: #293942;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 2px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0.0, 0.2, 1);
}

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

body {
    font-family: 'Roboto', 'Segoe UI', Tahoma, sans-serif;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
}

/* ============================================================================
   ÉCRAN DE CHARGEMENT
   ============================================================================ */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-screen.active {
    display: flex;
}

.loader {
    text-align: center;
}

.phone-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, var(--whatsapp-green), var(--whatsapp-teal));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: white;
    animation: pulse 2s infinite;
}

.loading-text {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--whatsapp-green);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

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

/* ============================================================================
   ÉCRANS
   ============================================================================ */
.screen {
    display: none;
    width: 100vw;
    height: 100vh;
}

.screen.active {
    display: flex;
}

/* ============================================================================
   ÉCRAN DE CONNEXION
   ============================================================================ */
#login-screen {
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.login-container {
    width: 100%;
    max-width: 450px;
    background: var(--bg-secondary);
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--whatsapp-teal), var(--whatsapp-dark-green));
    padding: 3rem 2rem;
    text-align: center;
    color: white;
}

.logo {
    width: 80px;
    height: 80px;
    margin: 0 auto 1rem;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    backdrop-filter: blur(10px);
}

.login-header h1 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.subtitle {
    opacity: 0.9;
    font-size: 0.95rem;
}

.login-form-container {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-group label i {
    margin-right: 0.5rem;
    color: var(--whatsapp-green);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--whatsapp-green);
}

.password-input {
    position: relative;
}

.toggle-password {
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.5rem;
}

.form-options {
    margin: 1rem 0;
}

.checkbox-container {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.checkbox-container input {
    margin-right: 0.5rem;
}

.btn-primary {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--whatsapp-green), var(--whatsapp-teal));
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.error-message {
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: rgba(241, 92, 109, 0.1);
    border: 1px solid var(--accent-danger);
    border-radius: 8px;
    color: var(--accent-danger);
    font-size: 0.9rem;
    display: none;
}

.error-message.show {
    display: block;
}

.login-footer {
    padding: 1.5rem 2rem;
    background: var(--bg-primary);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.login-footer p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
}

.security-badges {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.badge {
    padding: 0.3rem 0.75rem;
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.badge i {
    margin-right: 0.3rem;
}

/* ============================================================================
   APPLICATION PRINCIPALE
   ============================================================================ */
.app-container {
    display: flex;
    width: 100%;
    height: 100vh;
    background: var(--bg-primary);
}

/* ============================================================================
   SIDEBAR
   ============================================================================ */
.sidebar {
    width: 400px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 1.25rem 1.5rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--whatsapp-green), var(--whatsapp-teal));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    flex-shrink: 0;
}

.user-info h3 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.status {
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.status i {
    font-size: 0.6rem;
}

.status.online i {
    color: var(--accent-success);
}

.sidebar-actions {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 50%;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.search-bar {
    padding: 0.75rem 1rem;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.search-bar i {
    color: var(--text-secondary);
}

.search-bar input {
    flex: 1;
    background: var(--bg-tertiary);
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--text-primary);
}

.tabs {
    display: flex;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.tab {
    flex: 1;
    padding: 1rem;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    position: relative;
}

.tab.active {
    color: var(--whatsapp-green);
}

.tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--whatsapp-green);
}

.contacts-list,
.call-history {
    flex: 1;
    overflow-y: auto;
}

.contact-item {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item:hover {
    background: var(--bg-hover);
}

.contact-item.active {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--whatsapp-green);
}

.contact-item .contact-info {
    flex: 1;
}

.contact-item .contact-name {
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.contact-item .contact-status {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.empty-state {
    text-align: center;
    padding: 3rem 2rem;
}

.empty-state i {
    font-size: 4rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.btn-secondary {
    padding: 0.75rem 1.5rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-secondary:hover {
    background: var(--bg-hover);
}

/* ============================================================================
   ZONE PRINCIPALE
   ============================================================================ */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
}

.welcome-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.welcome-content {
    text-align: center;
    max-width: 500px;
}

.welcome-icon {
    width: 120px;
    height: 120px;
    margin: 0 auto 2rem;
    background: linear-gradient(135deg, rgba(37, 211, 102, 0.1), rgba(7, 94, 84, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: var(--whatsapp-green);
}

.welcome-content h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.welcome-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.features {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.feature {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.feature i {
    font-size: 2rem;
    color: var(--whatsapp-green);
}

/* ============================================================================
   VUE CONTACT
   ============================================================================ */
.contact-view {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.contact-header {
    padding: 1.5rem 2rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.contact-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-id {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.call-actions {
    display: flex;
    gap: 1rem;
}

.btn-call {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 500;
}

.btn-call.audio {
    background: var(--accent-blue);
    color: white;
}

.btn-call.video {
    background: var(--whatsapp-green);
    color: white;
}

.btn-call:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.contact-details {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
}

.detail-card {
    background: var(--bg-secondary);
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.detail-card h4 {
    margin-bottom: 1rem;
    color: var(--whatsapp-green);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-item:last-child {
    border-bottom: none;
}

.detail-item .label {
    color: var(--text-secondary);
}

.mini-history {
    margin-top: 1rem;
}

.empty-message {
    text-align: center;
    color: var(--text-secondary);
    padding: 2rem 0;
}

/* ============================================================================
   ÉCRAN D'APPEL
   ============================================================================ */
.call-screen {
    position: relative;
    background: #000;
}

.call-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.remote-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.local-video {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 240px;
    height: 180px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: var(--shadow-lg);
    border: 3px solid var(--bg-tertiary);
    transform: scaleX(-1); /* Effet miroir */
}

.call-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, rgba(0,0,0,0.7) 0%, transparent 30%, transparent 70%, rgba(0,0,0,0.7) 100%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
}

.call-info {
    text-align: center;
    color: white;
}

.caller-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto 1rem;
    background: linear-gradient(135deg, var(--whatsapp-green), var(--whatsapp-teal));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.call-info h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.call-status {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.call-duration {
    font-size: 1.2rem;
    font-family: monospace;
    opacity: 0.8;
}

.call-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.control-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.2);
    color: white;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    backdrop-filter: blur(10px);
}

.control-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.1);
}

.control-btn.danger {
    background: var(--accent-danger);
}

.control-btn.danger:hover {
    background: #d9534f;
}

.control-btn.active {
    background: var(--accent-danger);
}

.network-stats {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(0,0,0,0.5);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    backdrop-filter: blur(10px);
    display: flex;
    gap: 1.5rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    font-size: 0.9rem;
}

/* ============================================================================
   MODALES
   ============================================================================ */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: 16px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-content.large {
    max-width: 800px;
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-header h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.5rem;
}

.modal-body {
    padding: 2rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.form-actions button {
    flex: 1;
}

/* Modal appel entrant */
.incoming-call {
    text-align: center;
    padding: 3rem 2rem;
}

.caller-info {
    margin-bottom: 2rem;
}

.caller-avatar.pulse {
    animation: ringPulse 1.5s infinite;
}

@keyframes ringPulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 0 0 20px rgba(37, 211, 102, 0);
    }
}

.incoming-actions {
    display: flex;
    gap: 2rem;
    justify-content: center;
}

.btn-decline,
.btn-accept {
    padding: 1rem 2rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.btn-decline {
    background: var(--accent-danger);
    color: white;
}

.btn-accept {
    background: var(--whatsapp-green);
    color: white;
}

/* ============================================================================
   TOAST NOTIFICATIONS
   ============================================================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 99999;
}

.toast {
    background: var(--bg-secondary);
    padding: 1rem 1.5rem;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================================================
   UTILITAIRES
   ============================================================================ */
.hidden {
    display: none !important;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        position: absolute;
        z-index: 100;
    }
    
    .sidebar.hide-mobile {
        display: none;
    }
    
    .local-video {
        width: 120px;
        height: 90px;
        top: 10px;
        right: 10px;
    }
    
    .call-controls {
        gap: 0.5rem;
    }
    
    .control-btn {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}

/* ============================================================================
   SCROLLBAR
   ============================================================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}