/**
 * Estils principals de l'aplicació Pomodoro
 * Disseny modern, minimalista i net
 */

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

:root {
    /* Colors - Mode Fosc (per defecte) */
    --color-focus: #e74c3c;
    --color-short-break: #3498db;
    --color-long-break: #2ecc71;
    --color-bg: #1a1a2e;
    --color-bg-secondary: #16213e;
    --color-text: #ffffff;
    --color-text-secondary: #a0a0a0;
    --color-border: #2a2a4a;
    --color-input-bg: rgba(255, 255, 255, 0.05);
    --color-button-bg: rgba(255, 255, 255, 0.1);
    --color-modal-bg: rgba(255, 255, 255, 0.1);
    --color-modal-border: rgba(255, 255, 255, 0.2);

    /* Dimensions */
    --timer-size: 240px;
    --border-radius: 12px;
    --transition: 0.3s ease;
}

/* Mode Clar */
[data-theme="light"] {
    --color-bg: #f5f5f5;
    --color-bg-secondary: #e0e0e0;
    --color-text: #1a1a2e;
    --color-text-secondary: #4a4a6a;
    --color-border: #c0c0c0;
    --color-input-bg: rgba(0, 0, 0, 0.05);
    --color-button-bg: rgba(0, 0, 0, 0.1);
    --color-modal-bg: rgba(255, 255, 255, 0.8);
    --color-modal-border: rgba(0, 0, 0, 0.1);
}

html {
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
    color: var(--color-text);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* ===== Contenidor Principal ===== */
.app-container {
    width: 100%;
    max-width: 500px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    position: relative;
    z-index: 1;
}

/* ===== Header ===== */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    position: relative;
}

.app-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    text-align: center;
    letter-spacing: -0.5px;
}

.info-link-header {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-button-bg);
    border: none;
    border-radius: 50%;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition);
    flex-shrink: 0;
}

.info-link-header:hover {
    opacity: 0.8;
    transform: scale(1.05);
}

.theme-toggle {
    background: var(--color-button-bg);
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    color: var(--color-text);
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: var(--color-button-bg);
    opacity: 0.8;
    transform: scale(1.1);
}

.theme-icon {
    font-size: 1.25rem;
    line-height: 1;
}

/* ===== Selector de Mode ===== */
.mode-selector {
    display: flex;
    gap: 8px;
    background: var(--color-input-bg);
    padding: 6px;
    border-radius: var(--border-radius);
    width: 100%;
}

.mode-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 8px 6px;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

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

.mode-btn.active {
    background: rgba(255, 255, 255, 0.15);
    color: var(--color-text);
    font-weight: 500;
}

.mode-btn.active[data-mode="focus"] {
    border-bottom: 2px solid var(--color-focus);
}

.mode-btn.active[data-mode="short_break"] {
    border-bottom: 2px solid var(--color-short-break);
}

.mode-btn.active[data-mode="long_break"] {
    border-bottom: 2px solid var(--color-long-break);
}

.mode-icon {
    font-size: 1.1rem;
}

.mode-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* ===== Indicadors de Sessió ===== */
.session-indicators {
    display: flex;
    gap: 24px;
    width: 100%;
    justify-content: center;
}

.indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

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

.indicator-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-text);
}

.indicator-label {
    font-size: 0.65rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

/* ===== Controls ===== */
.controls {
    display: flex;
    gap: 12px;
    align-items: center;
    position: relative;
    z-index: 100;
}

.control-btn {
    position: relative;
    z-index: 100;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-button-bg);
    border: none;
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    transition: var(--transition);
    pointer-events: auto;
}

.control-btn:hover {
    background: var(--color-button-bg);
    opacity: 0.8;
    transform: scale(1.05);
}

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

.control-btn.primary {
    width: 64px;
    height: 64px;
    background: var(--color-focus);
    box-shadow: 0 4px 20px rgba(231, 76, 60, 0.4);
}

.control-btn.primary:hover {
    background: #c0392b;
}

.control-btn.primary.running {
    background: var(--color-long-break);
    box-shadow: 0 4px 20px rgba(46, 204, 113, 0.4);
}

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

.control-btn.primary svg {
    width: 32px;
    height: 32px;
}

/* ===== Missatge d'estat ===== */
.status-message {
    min-height: 24px;
    font-size: 0.875rem;
    color: var(--color-text);
    text-align: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

/* ===== Prompt d'instal·lació PWA ===== */
.install-prompt {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-modal-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--color-modal-border);
    border-radius: var(--border-radius);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    z-index: 1000;
    max-width: 90%;
}

.install-prompt-content {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.install-prompt p {
    font-size: 0.875rem;
    color: var(--color-text);
}

.install-prompt button {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: inherit;
    cursor: pointer;
    transition: var(--transition);
}

#install-btn {
    background: var(--color-focus);
    color: white;
}

#install-btn:hover {
    background: #c0392b;
}

#dismiss-btn {
    background: transparent;
    color: var(--color-text-secondary);
}

#dismiss-btn:hover {
    color: var(--color-text);
}

/* ===== Utilitats ===== */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Animacions */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* Assegurar que tots els fills tinguin position per al z-index */
.app-container > * {
    animation: slideUp 0.5s ease backwards;
    position: relative;
}

.app-container > *:nth-child(1) { animation-delay: 0.05s; }
.app-container > *:nth-child(2) { animation-delay: 0.1s; }
.app-container > *:nth-child(3) { animation-delay: 0.15s; }
.app-container > *:nth-child(4) { animation-delay: 0.2s; }
.app-container > *:nth-child(5) { animation-delay: 0.25s; }
.app-container > *:nth-child(6) { animation-delay: 0.3s; }