/* Shared HUD military theme for auth pages (signin, signup, verify-email, set-password) */

body {
    background-color: #080b08;
    background-image:
        radial-gradient(circle at 50% 0%, rgba(74, 222, 128, 0.08) 0%, transparent 75%),
        linear-gradient(to right, rgba(74, 222, 128, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(74, 222, 128, 0.03) 1px, transparent 1px);
    background-size: 100% 100%, 24px 24px, 24px 24px;
    color: #d1d5db;
    min-height: 100vh;
}

.scanline {
    width: 100%;
    height: 2px;
    background: rgba(74, 222, 128, 0.15);
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 1;
    animation: scan 8s linear infinite;
}

@keyframes scan {
    0% { top: 0%; opacity: 0; }
    50% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.hud-card {
    background: rgba(18, 23, 19, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(74, 222, 128, 0.25);
    box-shadow: 0 0 25px rgba(0, 0, 0, 0.8), inset 0 0 15px rgba(74, 222, 128, 0.03);
    position: relative;
}

.hud-card::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    width: 12px;
    height: 12px;
    border-top: 2px solid #4ade80;
    border-left: 2px solid #4ade80;
}

.hud-card::after {
    content: '';
    position: absolute;
    bottom: -1px;
    right: -1px;
    width: 12px;
    height: 12px;
    border-bottom: 2px solid #4ade80;
    border-right: 2px solid #4ade80;
}

.hud-field {
    background: rgba(10, 13, 10, 0.7);
    border: 1px solid #2a362c;
    transition: all 0.2s ease;
}

.hud-field:hover {
    border-color: rgba(74, 222, 128, 0.5);
    box-shadow: 0 0 10px rgba(74, 222, 128, 0.1);
}

.hud-field:focus-within,
input.hud-field:focus {
    outline: none;
    border-color: #4ade80;
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.2);
}

.hud-field.error {
    border-color: #f87171;
    box-shadow: 0 0 12px rgba(248, 113, 113, 0.2);
}

.form-error {
    display: none;
    color: #f87171;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.7rem;
    margin-top: 0.35rem;
}

.form-error.show { display: block; }

.btn-primary {
    background: rgba(74, 222, 128, 0.12);
    border: 1px solid rgba(74, 222, 128, 0.5);
    color: #4ade80;
    font-family: 'Share Tech Mono', monospace;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    transition: all 0.2s ease;
}

.btn-primary:hover:not(:disabled) {
    background: rgba(74, 222, 128, 0.22);
    box-shadow: 0 0 20px rgba(74, 222, 128, 0.25);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) { transform: scale(0.98); }

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

.btn-ghost {
    background: rgba(28, 36, 29, 0.8);
    border: 1px solid #3f5242;
    color: #9ca3af;
    font-family: 'Share Tech Mono', monospace;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all 0.2s ease;
}

.btn-ghost:hover:not(:disabled) {
    border-color: rgba(74, 222, 128, 0.5);
    color: #d1d5db;
}

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

/* OTP code boxes */
#otpRow {
    display: grid;
    grid-template-columns: repeat(8, minmax(0, 1fr));
    gap: 0.5rem;
    width: 100%;
    padding: 0 1rem;
    box-sizing: border-box;
}

.otp-input {
    width: 100%;
    min-width: 0;
    height: 3.5rem;
    text-align: center;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1.5rem;
    font-weight: bold;
    color: #4ade80;
    background: rgba(10, 13, 10, 0.7);
    border: 1px solid #2a362c;
    border-radius: 0.375rem;
    caret-color: #4ade80;
    transition: all 0.15s ease;
}

.otp-input:focus {
    outline: none;
    border-color: #4ade80;
    box-shadow: 0 0 15px rgba(74, 222, 128, 0.3);
    transform: scale(1.05);
}

.otp-input.filled {
    border-color: rgba(74, 222, 128, 0.6);
    background: rgba(74, 222, 128, 0.08);
}

.otp-input.error {
    border-color: #f87171;
    color: #f87171;
}

@media (max-width: 400px) {
    #otpRow { gap: 0.25rem; padding: 0 0.25rem; }
    .otp-input { height: 3rem; font-size: 1.25rem; }
}

/* Password strength bar */
.strength-track {
    height: 4px;
    background: #1c241d;
    border-radius: 2px;
    overflow: hidden;
}

.strength-bar {
    height: 100%;
    width: 0%;
    background: #f87171;
    transition: width 0.3s ease, background 0.3s ease;
}

.strength-bar.weak { width: 33%; background: #f87171; }
.strength-bar.medium { width: 66%; background: #fbbf24; }
.strength-bar.strong { width: 100%; background: #4ade80; }

/* Requirement checklist */
.req-item { color: #6b7280; transition: color 0.2s ease; }
.req-item.met { color: #4ade80; }
.req-item.met i::before { content: '\f00c'; }

/* Shake animation for invalid input */
@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

.shake { animation: shake 0.4s ease; }

/* Fade-up entrance */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-up { animation: fadeUp 0.5s ease both; }
.fade-up-delay { animation: fadeUp 0.5s ease 0.15s both; }

/* Loading spinner */
.loading-spinner {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid rgba(74, 222, 128, 0.3);
    border-top-color: #4ade80;
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    vertical-align: -0.15em;
    margin-right: 0.5em;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Toast notifications */
#toastContainer {
    position: fixed;
    top: 1.25rem;
    right: 1.25rem;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: min(24rem, calc(100vw - 2.5rem));
}

.toast {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    background: rgba(18, 23, 19, 0.95);
    border: 1px solid rgba(74, 222, 128, 0.4);
    color: #4ade80;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
    animation: fadeUp 0.3s ease;
}

.toast.error { border-color: rgba(248, 113, 113, 0.5); color: #f87171; }
.toast.info { border-color: rgba(0, 240, 255, 0.4); color: #00f0ff; }

/* Demo transmission panel (only shown when Supabase is not configured) */
.demo-panel {
    border: 1px dashed rgba(251, 191, 36, 0.5);
    background: rgba(251, 191, 36, 0.06);
    color: #fbbf24;
}