/* ===================================
   DRC EMBASSY AI VOICE ASSISTANT
   Embassy of the Democratic Republic of the Congo
   Mobile-First Responsive Design
   =================================== */

/* ===== CSS CUSTOM PROPERTIES ===== */
:root {
    /* DRC Flag Colors */
    --primary-blue: #007FFF;
    --secondary-blue: #0066CC;
    --light-blue: #3399FF;
    --dark-blue: #004080;
    --accent-yellow: #F7D618;
    --accent-gold: #FFD700;
    --accent-red: #CE1126;
    --white: #FFFFFF;
    --light-gray: #F8F9FA;
    --medium-gray: #E9ECEF;
    --dark-gray: #495057;
    --text-dark: #212529;
    --shadow-light: rgba(0, 127, 255, 0.1);
    --shadow-medium: rgba(0, 127, 255, 0.2);
    --shadow-heavy: rgba(0, 0, 0, 0.15);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    
    /* Transitions */
    --transition-fast: 0.15s ease-out;
    --transition-medium: 0.3s ease-out;
    --transition-slow: 0.5s ease-out;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 50%, var(--dark-blue) 100%);
    background-attachment: fixed;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===== UTILITY CLASSES ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

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

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

/* ===== FLAG STRIPE DECORATION ===== */
.flag-stripe {
    position: fixed;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: linear-gradient(
        135deg,
        transparent 0%,
        transparent 42%,
        var(--accent-yellow) 42%,
        var(--accent-yellow) 44%,
        var(--accent-red) 44%,
        var(--accent-red) 56%,
        var(--accent-yellow) 56%,
        var(--accent-yellow) 58%,
        transparent 58%,
        transparent 100%
    );
    pointer-events: none;
    z-index: 0;
    opacity: 0.15;
}

/* ===== HEADER STYLES ===== */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 3px solid var(--accent-yellow);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 20px var(--shadow-light);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-image {
    width: 60px;
    height: 45px;
    object-fit: contain;
    border-radius: 4px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.embassy-name {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-blue);
    letter-spacing: 0.3px;
}

.embassy-location {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--dark-gray);
}

.language-selector {
    display: flex;
    gap: var(--spacing-sm);
}

.lang-btn {
    background: rgba(0, 127, 255, 0.1);
    border: 1px solid rgba(0, 127, 255, 0.3);
    color: var(--primary-blue);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lang-btn:hover {
    background: rgba(0, 127, 255, 0.2);
}

.lang-btn.active {
    background: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 127, 255, 0.1);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(0, 127, 255, 0.2);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--primary-blue);
    animation: status-pulse 2s ease-in-out infinite;
}

.status-text {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--primary-blue);
}

@keyframes status-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: calc(100vh - 120px);
    position: relative;
    z-index: 1;
}

/* ===== WELCOME SECTION ===== */
.welcome-section {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    text-align: center;
}

.welcome-content {
    max-width: 550px;
    width: 100%;
    animation: slideUp 0.8s ease-out;
}

.welcome-icon {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pulse-ring {
    position: absolute;
    width: 100px;
    height: 100px;
    border: 2px solid var(--accent-yellow);
    border-radius: 50%;
    animation: pulse-ring 2s ease-out infinite;
}

.pulse-ring.delay-1 { animation-delay: 0.5s; }
.pulse-ring.delay-2 { animation-delay: 1s; }

@keyframes pulse-ring {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.3); opacity: 0; }
}

.embassy-seal {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 30px var(--shadow-medium);
    border: 3px solid var(--accent-yellow);
    z-index: 1;
}

.microphone-icon {
    width: 36px;
    height: 36px;
    color: var(--white);
    stroke-width: 2;
}

.welcome-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.welcome-subtitle {
    font-size: 1rem;
    color: var(--accent-yellow);
    font-style: italic;
    margin-bottom: var(--spacing-md);
}

.welcome-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xl);
    line-height: 1.7;
}

.service-highlights {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.highlight-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-width: 110px;
    transition: all var(--transition-medium);
}

.highlight-item:hover {
    transform: translateY(-3px);
    background: rgba(255, 255, 255, 0.2);
}

.highlight-icon {
    font-size: 1.5rem;
}

.highlight-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--white);
    text-align: center;
}

.start-call-btn {
    position: relative;
    background: linear-gradient(135deg, var(--accent-yellow), var(--accent-gold));
    color: var(--text-dark);
    border: none;
    padding: var(--spacing-lg) var(--spacing-xxl);
    border-radius: var(--radius-xl);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin: 0 auto var(--spacing-md);
    min-height: 60px;
    box-shadow: 0 8px 30px rgba(247, 214, 24, 0.4);
    transition: all var(--transition-medium);
    overflow: hidden;
    min-width: 280px;
}

.start-call-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(247, 214, 24, 0.5);
}

.btn-icon { font-size: 1.25rem; }

.btn-ripple {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.start-call-btn:active .btn-ripple {
    width: 300px;
    height: 300px;
}

.consultation-note {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-lg);
}

.embassy-hours {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.embassy-hours h3 {
    color: var(--accent-yellow);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.embassy-hours p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.85rem;
    margin: var(--spacing-xs) 0;
}

/* ===== CHAT SECTION ===== */
.chat-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    background: var(--white);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    margin-top: var(--spacing-lg);
    box-shadow: 0 -5px 25px var(--shadow-light);
    overflow: hidden;
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 70vh;
}

.chat-header {
    display: flex;
    align-items: center;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--light-gray), var(--white));
    border-bottom: 2px solid var(--accent-yellow);
    gap: var(--spacing-md);
}

.amani-avatar {
    position: relative;
    width: 50px;
    height: 50px;
}

.avatar-image {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    font-size: 1.25rem;
    border: 2px solid var(--accent-yellow);
}

.avatar-status {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 14px;
    height: 14px;
    background: #10B981;
    border: 2px solid var(--white);
    border-radius: 50%;
}

.amani-info { flex: 1; }

.amani-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-dark);
    margin: 0;
}

.amani-title {
    font-size: 0.875rem;
    color: var(--dark-gray);
    margin: 0;
}

.call-timer {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
    background: rgba(0, 127, 255, 0.1);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-family: 'Courier New', monospace;
}

.chat-messages {
    flex: 1;
    padding: var(--spacing-lg);
    overflow-y: auto;
    background: linear-gradient(to bottom, var(--white), var(--light-gray));
}

.message {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    animation: slideUp 0.4s ease-out;
}

.message-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: var(--white);
}

.message-content {
    flex: 1;
    background: var(--white);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border: 1px solid var(--medium-gray);
    border-left: 3px solid var(--primary-blue);
}

.message-content p {
    margin: 0;
    line-height: 1.6;
}

/* ===== VOICE CONTROLS ===== */
.voice-controls {
    padding: var(--spacing-lg);
    background: var(--white);
    border-top: 1px solid var(--medium-gray);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.voice-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.voice-indicator {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 8px 25px var(--shadow-medium);
    border: 3px solid var(--accent-yellow);
}

.wave-animation {
    display: flex;
    align-items: center;
    gap: 3px;
    height: 30px;
}

.wave-bar {
    width: 4px;
    background: var(--white);
    border-radius: 2px;
    animation: wave 1.5s ease-in-out infinite;
}

.wave-bar:nth-child(1) { animation-delay: 0s; height: 10px; }
.wave-bar:nth-child(2) { animation-delay: 0.1s; height: 20px; }
.wave-bar:nth-child(3) { animation-delay: 0.2s; height: 30px; }
.wave-bar:nth-child(4) { animation-delay: 0.3s; height: 20px; }
.wave-bar:nth-child(5) { animation-delay: 0.4s; height: 10px; }

@keyframes wave {
    0%, 100% { transform: scaleY(1); }
    50% { transform: scaleY(0.3); }
}

.voice-status-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.control-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
}

.control-btn {
    width: 60px;
    height: 60px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-medium);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.control-btn svg {
    width: 24px;
    height: 24px;
    stroke-width: 2;
}

.mute-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
}

.mute-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-medium);
}

.end-call-btn {
    background: linear-gradient(135deg, var(--accent-red), #B91C1C);
    color: var(--white);
}

.end-call-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(206, 17, 38, 0.3);
}

/* ===== FOOTER ===== */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-top: 3px solid var(--accent-yellow);
    padding: var(--spacing-lg);
    text-align: center;
    position: relative;
    z-index: 1;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.footer-flag {
    width: 40px;
    height: 30px;
    border-radius: 3px;
}

.footer-embassy-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-blue);
}

.footer-contact {
    margin-bottom: var(--spacing-md);
}

.footer-contact p {
    font-size: 0.875rem;
    color: var(--dark-gray);
    margin: var(--spacing-xs) 0;
}

.footer-contact a {
    color: var(--primary-blue);
    text-decoration: none;
}

.footer-contact a:hover {
    text-decoration: underline;
}

.footer-disclaimer {
    font-size: 0.75rem;
    color: var(--dark-gray);
    opacity: 0.8;
    line-height: 1.5;
    margin-bottom: var(--spacing-sm);
}

.footer-copyright {
    font-size: 0.75rem;
    color: var(--dark-gray);
    font-weight: 500;
}

/* ===== MODALS ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--spacing-lg);
    animation: fadeIn 0.3s ease-out;
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    max-width: 400px;
    width: 100%;
    overflow: hidden;
    animation: slideUp 0.3s ease-out;
}

.modal-header {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
    text-align: center;
    position: relative;
}

.success-modal .modal-header {
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: var(--white);
}

.success-icon {
    width: 60px;
    height: 60px;
    background: var(--white);
    color: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    margin: 0 auto var(--spacing-md);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--dark-gray);
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.1);
}

.modal-body {
    padding: var(--spacing-lg);
    text-align: center;
}

.modal-body p {
    color: var(--dark-gray);
    line-height: 1.6;
}

.modal-footer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    text-align: center;
}

.btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-medium);
    min-width: 120px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--shadow-medium);
}

/* ===== CALL CONTROL POPUP ===== */
.call-control-popup {
    position: fixed;
    top: 20px;
    right: 20px;
    width: 320px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    border: 2px solid var(--accent-yellow);
    z-index: 1100;
    overflow: hidden;
    animation: slideUp 0.4s ease-out;
}

.popup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    color: var(--white);
}

.call-status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent-yellow);
    animation: status-pulse 2s ease-in-out infinite;
}

.status-dot.connected { background: #10B981; }
.status-dot.error { background: var(--accent-red); }

.popup-header .status-text {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--white);
}

.call-timer-display {
    font-family: 'Courier New', monospace;
    font-weight: 700;
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.popup-content {
    padding: var(--spacing-lg);
}

.amani-info-mini {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.mini-avatar {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-blue), var(--dark-blue));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
    border: 2px solid var(--accent-yellow);
}

.mini-details { display: flex; flex-direction: column; }
.mini-name { font-weight: 600; color: var(--text-dark); }
.mini-title { font-size: 0.75rem; color: var(--dark-gray); }

.voice-indicator-mini {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(0, 127, 255, 0.1);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 127, 255, 0.2);
}

.mini-wave-bars {
    display: flex;
    align-items: center;
    gap: 2px;
    height: 16px;
}

.mini-wave-bar {
    width: 3px;
    background: var(--primary-blue);
    border-radius: 2px;
    animation: wave 1.5s ease-in-out infinite;
}

.mini-wave-bar:nth-child(1) { height: 6px; }
.mini-wave-bar:nth-child(2) { height: 12px; animation-delay: 0.1s; }
.mini-wave-bar:nth-child(3) { height: 16px; animation-delay: 0.2s; }

.voice-status-mini {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--primary-blue);
}

.popup-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-lg) var(--spacing-lg);
}

.popup-control-btn {
    width: 50px;
    height: 50px;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-medium);
}

.popup-control-btn svg { width: 20px; height: 20px; }

.mute-popup-btn {
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
}

.mute-popup-btn.muted {
    background: var(--dark-gray);
}

.hangup-popup-btn {
    background: linear-gradient(135deg, var(--accent-red), #B91C1C);
    color: var(--white);
}

.popup-minimize-btn {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    width: 28px;
    height: 28px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.popup-minimize-btn svg { width: 14px; height: 14px; }

/* ===== ENHANCED MOBILE OPTIMIZATION ===== */

/* Safe area insets for notched devices */
@supports (padding: max(0px)) {
    .header {
        padding-top: max(0px, env(safe-area-inset-top));
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }
    
    .footer {
        padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
        padding-left: max(var(--spacing-lg), env(safe-area-inset-left));
        padding-right: max(var(--spacing-lg), env(safe-area-inset-right));
    }
    
    .call-control-popup {
        top: max(20px, calc(env(safe-area-inset-top) + 10px));
        right: max(20px, env(safe-area-inset-right));
    }
}

/* Touch-friendly minimum sizes (44x44px Apple guidelines) */
.lang-btn,
.control-btn,
.popup-control-btn,
.btn,
.start-call-btn {
    min-height: 44px;
    min-width: 44px;
}

/* Prevent text selection on interactive elements */
button, .btn, .lang-btn, .control-btn {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

/* Smooth scrolling for iOS */
.chat-messages {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* ===== EXTRA SMALL DEVICES (320px - 374px) ===== */
@media (max-width: 374px) {
    html { font-size: 14px; }
    
    .header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
    
    .logo-container { width: 100%; justify-content: center; }
    .logo-image { width: 40px; height: 30px; }
    .embassy-name { font-size: 0.8rem; }
    .embassy-location { font-size: 0.65rem; }
    
    .language-selector {
        width: 100%;
        justify-content: center;
    }
    .lang-btn { 
        padding: var(--spacing-xs) var(--spacing-sm); 
        font-size: 0.7rem;
        flex: 1;
        max-width: 100px;
    }
    
    .connection-status { 
        width: 100%;
        justify-content: center;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    .status-text { font-size: 0.65rem; }
    
    .welcome-title { font-size: 1.3rem; }
    .welcome-subtitle { font-size: 0.85rem; }
    .welcome-description { font-size: 0.9rem; }
    
    .service-highlights { 
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    .highlight-item { 
        width: 100%;
        max-width: 200px;
        flex-direction: row;
        justify-content: center;
    }
    
    .start-call-btn { 
        min-width: 100%;
        max-width: 280px;
        font-size: 0.95rem;
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    .embassy-hours { padding: var(--spacing-sm); }
    .embassy-hours h3 { font-size: 0.8rem; }
    .embassy-hours p { font-size: 0.75rem; }
    
    .call-control-popup { 
        left: 5px; 
        right: 5px; 
        width: auto;
        top: 10px;
    }
    
    .footer-embassy-name { font-size: 0.85rem; }
    .footer-contact p { font-size: 0.75rem; }
}

/* ===== SMALL DEVICES (375px - 480px) ===== */
@media (min-width: 375px) and (max-width: 480px) {
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-sm);
        padding: var(--spacing-sm);
    }
    
    .logo-image { width: 45px; height: 34px; }
    .embassy-name { font-size: 0.85rem; }
    .embassy-location { font-size: 0.7rem; }
    
    .language-selector { gap: var(--spacing-xs); }
    .lang-btn { padding: var(--spacing-xs) var(--spacing-sm); font-size: 0.75rem; }
    
    .connection-status { padding: var(--spacing-xs) var(--spacing-sm); }
    .status-text { font-size: 0.7rem; }
    
    .welcome-title { font-size: 1.5rem; }
    .welcome-description { font-size: 1rem; }
    
    .service-highlights { gap: var(--spacing-sm); }
    .highlight-item { min-width: 90px; padding: var(--spacing-sm); }
    
    .start-call-btn { min-width: 260px; font-size: 1rem; }
    
    .call-control-popup { left: 10px; right: 10px; width: auto; }
}

/* ===== MEDIUM DEVICES - TABLETS (481px - 768px) ===== */
@media (min-width: 481px) and (max-width: 768px) {
    .welcome-title { font-size: 1.8rem; }
    .welcome-description { font-size: 1.1rem; }
    .welcome-content { max-width: 600px; }
    
    .service-highlights { gap: var(--spacing-md); }
    .highlight-item { min-width: 120px; }
    
    .start-call-btn { min-width: 300px; font-size: 1.1rem; }
}

/* ===== LARGE DEVICES - DESKTOPS (769px+) ===== */
@media (min-width: 769px) {
    .welcome-title { font-size: 2.5rem; }
    .welcome-description { font-size: 1.25rem; }
    .welcome-content { max-width: 700px; }
    .start-call-btn { min-width: 320px; font-size: 1.25rem; }
    
    .header-content { padding: var(--spacing-md) var(--spacing-xl); }
}

/* ===== EXTRA LARGE DEVICES (1025px+) ===== */
@media (min-width: 1025px) {
    .welcome-title { font-size: 3rem; }
    .welcome-content { max-width: 800px; }
    
    .service-highlights { gap: var(--spacing-xl); }
    .highlight-item { min-width: 140px; padding: var(--spacing-lg); }
}

/* ===== LANDSCAPE ORIENTATION (Mobile) ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .welcome-section { padding: var(--spacing-sm); }
    .welcome-icon { width: 60px; height: 60px; margin-bottom: var(--spacing-sm); }
    .embassy-seal { width: 50px; height: 50px; }
    .pulse-ring { width: 60px; height: 60px; }
    .welcome-title { font-size: 1.3rem; margin-bottom: var(--spacing-xs); }
    .welcome-subtitle { margin-bottom: var(--spacing-xs); }
    .welcome-description { margin-bottom: var(--spacing-sm); }
    .service-highlights { margin-bottom: var(--spacing-sm); }
    .embassy-hours { display: none; }
}

/* ===== HIGH DPI / RETINA DISPLAYS ===== */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo-image,
    .footer-flag,
    .loading-flag {
        image-rendering: -webkit-optimize-contrast;
        image-rendering: crisp-edges;
    }
}

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

button:focus-visible, .control-btn:focus-visible {
    outline: 3px solid var(--accent-yellow);
    outline-offset: 2px;
}

/* ===== PRINT STYLES ===== */
@media print {
    .header, .voice-controls, .footer, .modal-overlay, .call-control-popup, .flag-stripe {
        display: none;
    }
}