:root {
    --primary: #019fe8;
    --primary-dark: #0189c7;
    --primary-light: #4dbfff;
    --surface: #ffffff;
    --border: #e5e7eb;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --gradient-start: #019fe8;
    --gradient-mid: #00d4ff;
    --gradient-end: #4dbfff;
}

[data-theme="dark"] {
    --surface: #0f172a;
    --border: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --input-bg: rgba(30, 41, 59, 0.5);
}

body {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 50%, #f0f9ff 100%);
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
}

[data-theme="dark"] body {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] .glass-effect {
    background: rgba(31, 41, 55, 0.7);
    border-color: rgba(75, 85, 99, 0.3);
}

.bg-element {
    position: absolute;
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
}

.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.input-modern {
    background: var(--input-bg, rgba(255, 255, 255, 0.8));
    border: 1.5px solid var(--border);
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.input-modern:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(1, 159, 232, 0.15);
    background: var(--surface);
}

.btn-primary-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--gradient-mid) 100%);
    color: white;
    box-shadow: 0 10px 25px -5px rgba(1, 159, 232, 0.4);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-primary-gradient:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 15px 30px -5px rgba(1, 159, 232, 0.5);
    filter: brightness(1.1);
}

.btn-primary-gradient:active:not(:disabled) {
    transform: translateY(0);
}

.btn-primary-gradient:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Animations */
@keyframes float {

    0%,
    100% {
        transform: translateY(0) scale(1);
    }

    50% {
        transform: translateY(-20px) scale(1.05);
    }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-slow {
    animation: float 10s ease-in-out infinite;
}

.animate-float-delay {
    animation: float 8s ease-in-out infinite 1s;
}

.anim-delay-200 {
    animation-delay: 0.2s;
}

.anim-delay-2000 {
    animation-delay: 2s;
}

@keyframes pulse-slow {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.15;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.3;
    }
}

.animate-pulse-slow {
    animation: pulse-slow 4s ease-in-out infinite;
}

@keyframes spin-slow {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

.animate-spin-slow {
    animation: spin-slow 12s linear infinite;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    20%,
    60% {
        transform: translateX(-5px);
    }

    40%,
    80% {
        transform: translateX(5px);
    }
}

.shake {
    animation: shake 0.4s cubic-bezier(.36, .07, .19, .97) both;
}

.alert {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 16px;
    border-width: 1px;
}

.alert-error {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}

.alert-success {
    background: #f0fdf4;
    color: #166534;
    border-color: #bbf7d0;
}

.text-primary-blue {
    color: #019fe8;
}

.text-accent-cyan {
    color: #00d4ff;
}