/* ============================================
   Flow - Pomodoro Timer Styles
   ============================================ */

/* CSS Variables for theming */
:root {
    --ring-size: min(60vw, 60vh, 520px);
    --timer-font: min(18vw, 18vh, 120px);
    --btn-large: min(16vw, 16vh, 120px);
    --btn-small: min(12vw, 12vh, 88px);
    --badge-font: min(5vw, 5vh, 22px);
    
    /* Dark theme (default) */
    --bg-color: #111213;
    --text-color: #fff;
    --text-muted: rgba(255, 255, 255, 0.5);
    --text-secondary: rgba(255, 255, 255, 0.7);
    --card-bg: #1a1a1a;
    --border-color: rgba(255, 255, 255, 0.1);
    --input-bg: rgba(255, 255, 255, 0.05);
    --input-border: rgba(255, 255, 255, 0.2);
    --button-bg: rgba(255, 255, 255, 0.1);
    --button-border: rgba(255, 255, 255, 0.2);
    --clock-bg: rgba(96, 96, 96, 0.36);
    --clock-border: rgba(105, 105, 105, 0.38);
    --modal-bg: rgba(0, 0, 0, 0.8);
    --ring-bg: rgba(255, 255, 255, 0.1);
}

/* Light theme */
[data-theme="light"] {
    --bg-color: #f5f5f5;
    --text-color: #1f2937;
    --text-muted: rgba(31, 41, 55, 0.5);
    --text-secondary: rgba(31, 41, 55, 0.7);
    --card-bg: #ffffff;
    --border-color: rgba(0, 0, 0, 0.1);
    --input-bg: rgba(0, 0, 0, 0.05);
    --input-border: rgba(0, 0, 0, 0.2);
    --button-bg: rgba(0, 0, 0, 0.05);
    --button-border: rgba(0, 0, 0, 0.1);
    --clock-bg: rgba(200, 200, 200, 0.4);
    --clock-border: rgba(150, 150, 150, 0.3);
    --modal-bg: rgba(0, 0, 0, 0.5);
    --ring-bg: rgba(0, 0, 0, 0.1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-color);
    color: var(--text-color);
    touch-action: manipulation;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Main App Container */
#app {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

/* Content Area */
#content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

/* ============================================
   Header & Status Badge
   ============================================ */

#header {
    position: absolute;
    top: 24px;
    left: 24px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    z-index: 10;
}

#badge {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 16px;
    border-radius: 22px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-color);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    background: rgba(59, 130, 246, 0.3);
    white-space: nowrap;
    flex-shrink: 0;
    box-sizing: border-box;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

#badge.mode-work {
    background: rgba(239, 68, 68, 0.4);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
}

#badge.mode-short-break {
    background: rgba(34, 197, 94, 0.4);
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.3);
}

#badge.mode-long-break {
    background: rgba(59, 130, 246, 0.4);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
}

/* Clock Widget */
#clock {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 16px;
    border-radius: 22px;
    font-size: 18px;
    font-weight: 400;
    color: var(--text-color);
    font-family: Arial, Helvetica, sans-serif;
    letter-spacing: 1px;
    background: var(--clock-bg);
    border: 1px solid var(--clock-border);
    box-shadow: 7px 7px 11px 0 rgba(0, 0, 0, 0.2);
    text-shadow: 5px 5px 11px rgba(0, 0, 0, 0.2);
    transition: all 300ms cubic-bezier(0.42, 0, 0.58, 1);
    flex-shrink: 0;
}

#clock-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Settings Button */
#settings-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 22px;
    background: var(--button-bg);
    border: 1px solid var(--button-border);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 300ms cubic-bezier(0.42, 0, 0.58, 1);
    box-shadow: 7px 7px 11px 0 rgba(0, 0, 0, 0.2);
}

#settings-btn:hover {
    background: var(--button-bg);
    opacity: 0.9;
}

#settings-btn:active {
    transform: scale(0.92);
}

/* ============================================
   Timer Ring
   ============================================ */

#ring {
    position: relative;
    width: 220px;
    height: 220px;
    margin-bottom: 24px;
}

#ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

#progress {
    transition: stroke-dashoffset 0.5s cubic-bezier(0.4, 0, 0.2, 1), stroke 0.5s ease;
}

#ring svg circle:first-child {
    stroke: var(--ring-bg);
}

#timer-text {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

#timer-time {
    font-size: 52px;
    font-weight: 300;
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    letter-spacing: -0.02em;
}

#timer-status {
    margin-top: 4px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

/* ============================================
   Controls
   ============================================ */

#controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.ctrl {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.15s ease-out;
    border: none;
    background: none;
}

.ctrl:active {
    transform: scale(0.88);
}

.ctrl.key-pressed {
    animation: btnPress 0.2s ease-out;
}

@keyframes btnPress {
    0% { transform: scale(1); }
    50% { transform: scale(0.85); }
    100% { transform: scale(1); }
}

.ctrl.small {
    width: 44px;
    height: 44px;
    background: var(--button-bg);
    border: 1px solid var(--button-border);
    color: var(--text-secondary);
}

.ctrl.small:active {
    opacity: 0.8;
}

.ctrl.large {
    width: 60px;
    height: 60px;
    background: var(--text-color);
    color: var(--bg-color);
    box-shadow: 0 8px 24px -6px rgba(0, 0, 0, 0.4);
}

.ctrl.large:active {
    transform: scale(0.95);
    box-shadow: 0 4px 16px -4px rgba(0, 0, 0, 0.3);
}

/* ============================================
   Fullscreen Mode
   ============================================ */

body.is-fullscreen #header {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

body.is-fullscreen:hover #header {
    opacity: 1;
    pointer-events: auto;
}

/* ============================================
   Settings Modal
   ============================================ */

#settings-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--modal-bg);
    z-index: 100;
    align-items: center;
    justify-content: center;
}

#settings-modal.active {
    display: flex;
}

#settings-content {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    width: 90%;
    max-width: 400px;
    max-height: 80vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
}

#settings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

#settings-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-color);
}

#settings-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 4px;
}

#settings-close:hover {
    color: var(--text-color);
}

.settings-section {
    margin-bottom: 24px;
}

.settings-section-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.settings-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    gap: 12px;
}

.settings-label {
    font-size: 14px;
    color: var(--text-secondary);
}

.settings-input {
    width: 70px;
    padding: 8px 12px;
    border-radius: 8px;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-color);
    font-size: 14px;
    text-align: center;
}

.settings-input:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.5);
}

.settings-toggle {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
}

.toggle-switch {
    width: 44px;
    height: 24px;
    background: var(--input-border);
    border-radius: 12px;
    position: relative;
    transition: background 0.2s;
}

.toggle-switch.active {
    background: rgba(59, 130, 246, 0.8);
}

.toggle-knob {
    width: 20px;
    height: 20px;
    background: var(--text-color);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}

.toggle-switch.active .toggle-knob {
    transform: translateX(20px);
}

.settings-reset-btn {
    width: 100%;
    padding: 10px;
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: 8px;
    color: rgba(239, 68, 68, 0.9);
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.settings-reset-btn:hover {
    background: rgba(239, 68, 68, 0.3);
}

.settings-credits {
    font-size: 13px;
    color: var(--text-muted);
    line-height: 1.6;
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

.settings-credits a {
    color: rgba(59, 130, 246, 0.8);
    text-decoration: none;
}

.settings-credits a:hover {
    text-decoration: underline;
}

/* ============================================
   Stats Section
   ============================================ */

#stats-section {
    background: var(--input-bg);
    border-radius: 12px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.stats-row {
    display: flex;
    justify-content: space-around;
    gap: 16px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-value {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-color);
    font-family: ui-monospace, SFMono-Regular, monospace;
}

.stat-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   Keyboard Shortcuts (desktop only)
   ============================================ */

#shortcuts-section {
    display: block;
}

body.is-mobile #shortcuts-section {
    display: none;
}

.settings-shortcut-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    gap: 16px;
}

.settings-shortcut-key {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 48px;
    padding: 6px 12px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, monospace;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-color);
}

.settings-shortcut-desc {
    font-size: 13px;
    color: var(--text-muted);
    text-align: right;
    line-height: 1.5;
}

/* ============================================
   Desktop Layout (769px+)
   ============================================ */

@media (min-width: 769px) {
    #content {
        flex-direction: row;
        justify-content: center;
        gap: 5vw;
        padding: 40px;
    }

    #timer-section {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    #controls-section {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 24px;
    }

    #clock-row {
        gap: 12px;
    }

    #settings-btn {
        width: 56px;
        height: 56px;
        border-radius: 28px;
    }

    #settings-btn svg {
        width: 24px;
        height: 24px;
    }

    #clock {
        height: 56px;
        padding: 0 24px;
        font-size: 24px;
        border-radius: 28px;
    }

    #badge {
        font-size: var(--badge-font);
        padding: 8px 24px;
        margin-bottom: 24px;
    }

    #ring {
        width: var(--ring-size);
        height: var(--ring-size);
        margin-bottom: 0;
    }

    #timer-time {
        font-size: var(--timer-font);
    }

    #timer-status {
        font-size: min(2.5vw, 2.5vh, 16px);
        margin-top: 8px;
    }

    .ctrl.large {
        width: var(--btn-large);
        height: var(--btn-large);
    }

    .ctrl.small {
        width: var(--btn-small);
        height: var(--btn-small);
    }

    #controls {
        flex-direction: column;
        gap: 20px;
    }
}

/* ============================================
   Mobile Layout (768px and below)
   ============================================ */

@media (max-width: 768px) {
    #header {
        top: 16px;
        left: 16px;
        gap: 6px;
    }

    #settings-btn {
        width: 36px;
        height: 36px;
        border-radius: 18px;
    }

    #badge {
        font-size: 11px;
        height: 36px;
        padding: 0 12px;
        border-radius: 18px;
    }

    #clock {
        font-size: 16px;
        height: 36px;
        padding: 0 14px;
        border-radius: 18px;
    }

    #content {
        flex-direction: column;
        justify-content: center;
        align-items: center;
        padding-top: 80px;
    }

    #timer-section {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    #controls-section {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

/* Mobile-specific body class (applied via JS) */
body.is-mobile {
    --ring-size: min(85vw, 420px);
    --timer-font: min(24vw, 96px);
    --btn-large: min(20vw, 90px);
    --btn-small: min(16vw, 72px);
    --badge-font: 16px;
}

body.is-mobile #header {
    position: absolute;
    top: 16px;
    left: 16px;
    gap: 8px;
}

body.is-mobile #clock {
    height: 36px;
    padding: 0 14px;
    font-size: 14px;
}

body.is-mobile #badge {
    height: 36px;
    padding: 0 14px;
    font-size: 11px;
}

body.is-mobile #clock-row {
    gap: 6px;
}

body.is-mobile #ring {
    width: var(--ring-size);
    height: var(--ring-size);
    margin-bottom: 24px;
}

body.is-mobile #timer-time {
    font-size: var(--timer-font);
}

body.is-mobile .ctrl.large {
    width: var(--btn-large);
    height: var(--btn-large);
}

body.is-mobile .ctrl.small {
    width: var(--btn-small);
    height: var(--btn-small);
}

body.is-mobile #controls {
    gap: 16px;
}

body.is-mobile #timer-status {
    font-size: 11px;
}