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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #0F1115;
    color: #FFFFFF;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

/* Variáveis CSS */
:root {
    --bg-primary: #0F1115;
    --bg-secondary: #1A1D24;
    --text-primary: #FFFFFF;
    --text-secondary: #AAB2C0;
    --accent-orange: #FF7A00;
    --error-red: #FF4D4D;
    --success-green: #2ECC71;
    --record-red: #FF4444;
}

/* Layout base dos ecrãs */
.screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.screen.active {
    opacity: 1;
    visibility: visible;
}

.container {
    width: 100%;
    max-width: 430px;
    min-width: 320px;
    padding: 20px;
    text-align: center;
}

/* Ecrã 1: Splashscreen */
#splash-screen {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
}

.logo h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--text-primary);
    text-shadow: 0 0 30px rgba(255, 122, 0, 0.3);
}

/* Ecrã 2: Escolha de modo */
#mode-selection {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    overflow: hidden;
}

.menu-container {
    height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 60px 20px 40px;
    position: relative;
}

/* Cabeçalho do menu */
.menu-header {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    padding-top: 20px;
}

.menu-title {
    color: white;
    font-size: 24px;
    font-weight: 600;
    margin: 0;
    letter-spacing: 0.5px;
    text-align: center;
}

/* Cartões do menu */
.menu-cards {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
    padding: 20px 0;
}

.menu-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 0;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    overflow: hidden;
    transform: translateY(100vh);
    opacity: 0;
}

.menu-card.show {
    transform: translateY(0);
    opacity: 1;
}

.card-1 {
    background: rgba(255, 255, 255, 0.15);
    transition-delay: 0.1s;
}

.card-2 {
    background: rgba(255, 255, 255, 0.12);
    transition-delay: 0.2s;
}

.card-3 {
    background: rgba(255, 255, 255, 0.1);
    transition-delay: 0.3s;
}

.menu-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.card-content {
    display: flex;
    align-items: center;
    padding: 25px 20px;
    gap: 20px;
}

.card-icon {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.card-text {
    flex: 1;
    color: white;
}

.card-text h3 {
    margin: 0 0 5px 0;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.card-text p {
    margin: 0;
    font-size: 14px;
    opacity: 0.8;
    font-weight: 300;
    line-height: 1.4;
}

.card-arrow {
    color: white;
    opacity: 0.6;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.menu-card:hover .card-arrow {
    opacity: 1;
    transform: translateX(5px);
}



/* Ecrã 3: Gravação */
#recording-screen {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: white;
    text-align: center;
}

/* Botão de voltar ao menu */
.back-menu {
    position: absolute;
    top: 60px;
    left: 20px;
    z-index: 10;
}

.back-menu-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 25px;
    padding: 12px 20px;
    color: white;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.back-menu-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-2px);
}

.back-menu-btn:active {
    transform: translateY(0);
}

.back-menu-btn svg {
    transition: transform 0.3s ease;
}

.back-menu-btn:hover svg {
    transform: translateX(-2px);
}

.record-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 3rem;
}

.record-dot {
    width: 12px;
    height: 12px;
    background: var(--record-red);
    border-radius: 50%;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

.record-text {
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Cronómetro e círculo de progresso */
.timer-container {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 4rem;
}

.progress-circle {
    transform: rotate(-90deg);
}

.progress-bg {
    fill: none;
    stroke: rgba(255, 255, 255, 0.1);
    stroke-width: 4;
}

.progress-bar {
    fill: none;
    stroke: var(--accent-orange);
    stroke-width: 4;
    stroke-linecap: round;
    stroke-dasharray: 565.48; /* 2 * π * 90 */
    stroke-dashoffset: 565.48;
    transition: stroke-dashoffset 0.1s ease;
}

.timer {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

#timer-display {
    font-size: 3rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    color: var(--text-primary);
    display: block;
    line-height: 1;
}

.timer-label {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
    display: block;
}

/* Controlos de gravação */
.controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.control-btn {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: none;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.control-btn:active {
    transform: scale(0.95);
}

.record-btn {
    width: 80px;
    height: 80px;
    background: var(--accent-orange);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
}

.record-btn:hover {
    background: #e66a00;
}

.record-btn.recording {
    animation: pulse-record 1.5s ease-in-out infinite;
}

@keyframes pulse-record {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(255, 122, 0, 0.7);
    }
    50% {
        transform: scale(1.08);
        box-shadow: 0 0 0 20px rgba(255, 122, 0, 0);
    }
}

.control-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.control-btn:disabled:hover {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    transform: none;
}

/* Estados da gravação */
.status-message {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    min-height: 1.5rem;
}

.status-message.success {
    color: var(--success-green);
}

.status-message.error {
    color: var(--error-red);
}

.status-message.sending {
    color: var(--accent-orange);
}

/* Diálogos */
.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.dialog-overlay.active {
    opacity: 1;
    visibility: visible;
}

.dialog {
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 2rem;
    margin: 20px;
    max-width: 400px;
    width: 100%;
    text-align: center;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.dialog-overlay.active .dialog {
    transform: scale(1);
}

.dialog-content {
    margin-bottom: 2rem;
    font-size: 1.1rem;
    line-height: 1.5;
    color: var(--text-primary);
}

.dialog-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
}

.dialog-btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dialog-btn.primary {
    background: var(--accent-orange);
    color: var(--text-primary);
}

.dialog-btn.primary:hover {
    background: #e66a00;
}

.dialog-btn.secondary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.dialog-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

/* Responsividade */
@media (max-width: 375px) {
    .container {
        padding: 15px;
    }
    
    .logo h1 {
        font-size: 3rem;
    }
    
    #timer-display {
        font-size: 2.5rem;
    }
    
    .controls {
        gap: 1.5rem;
    }
    
    .control-btn {
        width: 50px;
        height: 50px;
    }
    
    .record-btn {
        width: 70px;
        height: 70px;
    }
}

/* Estados de pausa */
.paused .record-dot {
    animation-play-state: paused;
}

.paused .progress-bar {
    stroke: var(--text-secondary);
}

/* Botão de tentar novamente */
.retry-btn {
    background: var(--accent-orange);
    color: var(--text-primary);
    border: none;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 1rem;
    transition: all 0.3s ease;
}

.retry-btn:hover {
    background: #e66a00;
    transform: translateY(-1px);
}

.retry-btn:active {
    transform: translateY(0);
}

/* Botão flutuante de ajuda */
.help-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 36px;
    height: 36px;
    background: var(--accent-orange);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 20px rgba(255, 122, 0, 0.3);
    transition: all 0.3s ease;
    z-index: 999;
}

/* Ocultar botão de ajuda na tela de splash */
#splash-screen.active ~ .help-btn {
    display: none;
}

.help-btn:hover {
    background: #e66a00;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(255, 122, 0, 0.4);
}

.help-btn:active {
    transform: translateY(0);
}

/* Popup de ajuda */
.help-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1001;
}

.help-overlay.active {
    opacity: 1;
    visibility: visible;
}

.help-popup {
    background: var(--bg-secondary);
    border-radius: 16px;
    margin: 20px;
    max-width: 500px;
    width: 100%;
    max-height: 80vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.help-overlay.active .help-popup {
    transform: scale(1);
}

.help-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.5rem 2rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.help-header h3 {
    margin: 0;
    color: var(--text-primary);
    font-size: 1.25rem;
    font-weight: 600;
}

.help-close-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 50%;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.help-close-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
}

.help-content {
    padding: 1.5rem 2rem 2rem;
}

.help-content p {
    margin: 0 0 1rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.help-content p:last-child {
    margin-bottom: 0;
}