/* KnexPay Screen Layouts - Blueprint Inspired */

/* ========================================
   LOADING OVERLAY
   ======================================== */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    height: 100dvh;
    background: var(--bg);
    z-index: var(--z-toast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.loading-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transform: translateY(-20px);
}

.loading-logo-container {
    width: 80px;
    height: 80px;
    margin-bottom: var(--spacing-lg);
    filter: drop-shadow(0 0 20px rgba(255, 140, 0, 0.6));
    animation: pulse-logo 2s ease-in-out infinite;
}

.loading-logo-svg {
    width: 100%;
    height: 100%;
}

.loading-logo {
    font-size: 32px;
    font-weight: 700;
    color: var(--neon);
    text-shadow: var(--glow-neon);
    letter-spacing: 0.2em;
    margin-bottom: var(--spacing-lg);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--bg-card);
    border-top-color: var(--neon);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ========================================
   APP CONTAINER
   ======================================== */

.app-container {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    min-height: 100vh;
    min-height: 100dvh;
    background: var(--bg);
}

/* ========================================
   HEADER
   ======================================== */

.header {
    position: relative;
    height: 50px;
    min-height: 50px;
    padding: 0 var(--spacing-md);
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.header h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--neon);
    text-shadow: var(--glow-neon);
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

.network-status {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    right: var(--spacing-md);
    padding: 4px 10px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 9px;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 6px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.network-status::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--neon);
    box-shadow: var(--glow-neon);
    animation: pulse-dot 1.5s ease-in-out infinite;
}

.network-status.offline::before {
    background: var(--red);
    box-shadow: var(--glow-red);
}

/* ========================================
   MAIN CONTENT
   ======================================== */

.main-content {
    flex: 1;
    overflow: hidden;
    position: relative;
    min-height: 0;
}

/* ========================================
   SCREENS
   ======================================== */

.screen {
    display: none;
    height: 100%;
    padding: var(--spacing-md);
    padding-bottom: 100px; /* Space for navbar */
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

.screen.active {
    display: block;
}

.screen-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--cyan);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--spacing-lg);
}

/* ========================================
   TAB NAVIGATION
   ======================================== */

.tab-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    padding: 10px 0 30px 0;
    z-index: var(--z-dropdown);
}

.tab-item {
    flex: 1;
    text-align: center;
    padding: 0;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    transition: color var(--transition-fast);
    position: relative;
}

.tab-item .icon {
    width: 22px;
    height: 22px;
    fill: currentColor;
    transition: all var(--transition-fast);
}

.tab-item:hover {
    color: var(--text-dim);
}

.tab-item.active {
    color: var(--neon);
}

.tab-item.active .icon {
    filter: drop-shadow(0 0 4px rgba(255, 140, 0, 0.5));
}

.tab-item.active::after {
    content: '';
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--neon);
    border-radius: 50%;
    box-shadow: var(--glow-neon);
}

/* ========================================
   PIN MODAL
   ======================================== */

.pin-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    height: 100dvh;
    background: var(--bg);
    z-index: var(--z-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: var(--spacing-lg);
}

.pin-modal.hidden {
    display: none;
}

.pin-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    max-width: 320px;
    width: 100%;
    text-align: center;
}

.pin-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--cyan);
    margin-bottom: var(--spacing-sm);
    letter-spacing: 0.1em;
}

.pin-subtitle {
    font-size: 12px;
    color: var(--text-dim);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.pin-display {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.pin-dot {
    width: 16px;
    height: 16px;
    border: 2px solid var(--border);
    border-radius: 50%;
    background: transparent;
    transition: all var(--transition-fast);
}

.pin-dot.filled {
    background: var(--neon);
    border-color: var(--neon);
    box-shadow: var(--glow-neon);
}

.pin-keypad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    max-width: 240px;
    margin: 0 auto;
}

.pin-key {
    width: 60px;
    height: 60px;
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 22px;
    font-weight: 600;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    font-family: var(--font);
    margin: 0 auto;
}

.pin-key:hover {
    border-color: var(--neon);
    color: var(--neon);
}

.pin-key:active,
.pin-key.pressed {
    background: var(--neon);
    color: var(--bg);
    transform: scale(0.95);
}

.pin-key:empty {
    visibility: hidden;
}

.pin-key.backspace {
    background: rgba(255, 51, 51, 0.1);
    border-color: var(--red);
    color: var(--red);
}

.pin-key.backspace:hover {
    background: rgba(255, 51, 51, 0.2);
}

.pin-key .icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* ========================================
   BIOMETRIC BUTTON
   ======================================== */

.biometric-btn {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 215, 0, 0.1);
    border: 1px solid rgba(255, 215, 0, 0.3);
    border-radius: var(--radius-md);
    color: var(--cyan);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-md);
}

.biometric-btn:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: var(--cyan);
}

.face-id-wrapper {
    width: 40px;
    height: 40px;
    position: relative;
}

.face-id-wrapper svg {
    width: 100%;
    height: 100%;
    stroke: currentColor;
}

.face-id-wrapper .circle {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    opacity: 0;
}

.face-id-wrapper.scanning .circle {
    animation: pulse-biometric 1s ease-in-out infinite;
}

.face-id-wrapper .circle.yellow { background: var(--yellow); animation-delay: 0s; }
.face-id-wrapper .circle.blue { background: var(--cyan); animation-delay: 0.33s; }
.face-id-wrapper .circle.red { background: var(--red); animation-delay: 0.66s; }